{"id":4517,"date":"2017-06-07T18:50:17","date_gmt":"2017-06-07T18:50:17","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/aacc-collegealgebrafoundations\/chapter\/read-percent-change-and-interest-problems\/"},"modified":"2017-08-15T11:57:43","modified_gmt":"2017-08-15T11:57:43","slug":"read-percent-change-and-interest-problems","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/aacc-collegealgebrafoundations\/chapter\/read-percent-change-and-interest-problems\/","title":{"raw":"Applications Involving Percents","rendered":"Applications Involving Percents"},"content":{"raw":"<div class=\"bcc-box bcc-highlight\">\r\n<h3>Learning Objectives<\/h3>\r\n<ul>\r\n \t<li>Solve percent change and interest problems\r\n<ul>\r\n \t<li>Calculate discounts and markups using percent<\/li>\r\n \t<li>Calculate interest earned or owed<\/li>\r\n \t<li>Read and interpret data from pie charts as percents<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n<\/div>\r\n<h2>Percent Change<\/h2>\r\nPercents have a wide variety of applications to everyday life, showing up regularly in taxes, discounts, markups, and interest rates. We will look at several examples of how to use percent to calculate markups, discounts, and interest earned or owed.\r\n<div class=\"bcc-box bcc-info\">\r\n<h3>Example<\/h3>\r\nJeff has a coupon at the Guitar Store for 15% off any purchase of $100 or more. He wants to buy a used guitar that has a price tag of $220 on it. Jeff wonders how much money the coupon will take off of the $220 original price<i>.<\/i>\r\n\r\n[reveal-answer q=\"285084\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"285084\"]Simplify the problems by eliminating extra words.\r\n<p style=\"text-align: center\">How much is 15% of $220?<\/p>\r\nIdentify the percent, the base, and the amount.\r\n\r\nPercent: 15%\r\nBase: 220\r\nAmount: <i>n<\/i>\r\n\r\nWrite the percent equation.\r\n<p style=\"text-align: center\">[latex]\\begin{array}{c}\\text{Percent}\\cdot\\text{Base}=\\text{Amount}\\\\15\\%\\cdot220=n\\end{array}[\/latex]<\/p>\r\nConvert 15% to 0.15, then multiply by 220. 15% of $220 is $33.\r\n<p style=\"text-align: center\">[latex]0.15\\cdot220=33[\/latex]<\/p>\r\n\r\n<h4>Answer<\/h4>\r\nThe coupon will take $33 off the original price.\r\n\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\nThe example video that follows shows how to use the percent equation to find the amount of a discount from the price of a phone.\r\n\r\nhttps:\/\/youtu.be\/bC7GUc1K6LU\r\n\r\nYou can estimate to see if the answer is reasonable. Since 15% is half way between 10% and 20%, find these numbers.\r\n<p style=\"text-align: center\">[latex]\\begin{array}{c}10\\%\\,\\,\\text{of}\\,\\,220=0.1\\cdot220=22\\\\20\\%\\,\\,\\text{of}\\,\\,220=0.2\\cdot220=44\\end{array}[\/latex]<\/p>\r\nThe answer, 33, is between 22 and 44. So $33 seems reasonable.\r\n\r\nThere are many other situations that involve percents. Below are just a few.\r\n<h2>Interest<\/h2>\r\nWhen a person takes out a loan, most lenders charge interest on the loan. <strong>Interest<\/strong> is a fee or change for borrowing money, typically a percent rate charged per year. We can compute simple interest by finding the interest rate percentage of the amount borrowed, then multiply by the number of years interest is earned.\r\n<div class=\"textbox shaded\">\r\n<h3>Simple Interest Equation<\/h3>\r\n<p style=\"text-align: center\">[latex]I=p\\cdot{r}\\cdot{t}[\/latex]<\/p>\r\nWhere:\r\n\r\n<i>I<\/i> is the <strong>interest<\/strong> paid\r\n\r\n<i>p<\/i> is the <strong>principal<\/strong>\u2014the original amount of money borrowed\r\n\r\n<i>r<\/i> is the <strong>interest rate<\/strong>, a per-year rate, written as a decimal\r\n\r\n<i>t<\/i> is the <strong>time<\/strong> of the loan, expressed in years or portions of a year\r\n\r\n<\/div>\r\n<div class=\"bcc-box bcc-info\">\r\n<h3>Example<\/h3>\r\nTreasury Notes (T-notes) are bonds issued by the federal government to cover its expenses. Suppose you obtain a $1,000 T-note with a 4% annual rate, with a maturity in 2 years. How much interest will you earn?\r\n\r\n[reveal-answer q=\"694437\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"694437\"]Identify the information given in the problem.\r\n\r\nInterest,<i> I<\/i>: unknown\r\n\r\nPrincipal, <i>p<\/i>: $1000\r\n\r\nRate, <i>r<\/i>: [latex]4\\%=0.04[\/latex]\r\n\r\nTime, <i>t<\/i>: 2 years\r\n\r\nPut the information in the simple interest equation.\r\n<p style=\"text-align: center\">[latex]I=1000\\cdot0.04\\cdot2[\/latex]<\/p>\r\nMultiply.\r\n<p style=\"text-align: center\">[latex]I=80[\/latex]<\/p>\r\n\r\n<h4>Answer<\/h4>\r\nYou would earn $80 in interest.\r\n\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\nIn the following video, you are shown how to find how much interest is earned on a specified investment amount.\r\n\r\nhttps:\/\/youtu.be\/iVmetUlbheY\r\n<div class=\"bcc-box bcc-info\">\r\n<h3>Example<\/h3>\r\nA friend asks to borrow $240, offering to repay you $250 in 1 month. What annual interest rate is this equivalent to?\r\n\r\n[reveal-answer q=\"470866\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"470866\"]Identify the information given in the problem. Here your friend is paying back $10 more than he borrowed, so that is the interest paid.\r\n\r\nInterest,<i> I<\/i>: $10\r\nPrincipal, <i>p<\/i>: $240\r\nRate, <i>r<\/i>: unknown\r\nTime, <i>t<\/i>: 1 month\r\n\r\nConvert the time to years.\r\n<p style=\"text-align: center\">[latex]1\\,\\,\\text{month}=\\frac{1}{12}\\,\\,\\text{year}[\/latex]<\/p>\r\nPut the information in the simple interest equation.\r\n<p style=\"text-align: center\">[latex]10=240\\cdot{r}\\cdot\\frac{1}{12}[\/latex]<\/p>\r\nRegroup and simplify.\r\n<p style=\"text-align: center\">[latex]\\begin{array}{l}10=r\\cdot240\\cdot\\frac{1}{12}\\\\\\\\10=r\\cdot\\frac{240}{12}\\\\\\\\10=r\\cdot20\\end{array}[\/latex]<\/p>\r\nDivide to undo the multiplication.\r\n<p style=\"text-align: center\">[latex]r=10\\div20=0.50[\/latex]<\/p>\r\nRewrite as a percent.\r\n<p style=\"text-align: center\">[latex]0.50=50\\%[\/latex]<\/p>\r\n\r\n<h4>Answer<\/h4>\r\nThis is equivalent to a 50% annual interest rate.\r\n\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\nThe example video that follows shows how to determine the annual simple interest rate.\r\n\r\nhttps:\/\/youtu.be\/SgnE7BJQG10\r\n<h2>Pie Charts<\/h2>\r\nCircle graphs, or pie charts, represent data as sections of the circle (or \u201cpieces of the pie\u201d), corresponding to their percentage of the whole. Circle graphs are often used to show how a whole set of data is broken down into individual components.\r\n\r\nHere\u2019s an example. At the beginning of a semester, a teacher talks about how she will determine student grades. She says, \u201cHalf your grade will be based on the final exam and 20% will be determined by quizzes. A class project will also be worth 20% and class participation will count for 10%.\u201d In addition to telling the class this information, she could also create a circle graph.\r\n<p style=\"text-align: center\"><img src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/2011\/2017\/06\/07185016\/image074.gif\" alt=\"image\" width=\"373\" height=\"264\" \/><\/p>\r\nThis graph is useful because it relates each part\u2014the final exam, the quizzes, the class project, and the class participation\u2014to the whole.\r\n<div class=\"bcc-box bcc-info\">\r\n<h3>Example<\/h3>\r\nIf the total number of points possible in the class is 500, how many points is the final exam worth?\r\n\r\n[reveal-answer q=\"956080\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"956080\"]Simplify the problem by eliminating extra words.\r\n<p style=\"text-align: center\">What is 50% of 500?<\/p>\r\nIdentify the percent, the base, and the amount.\r\n\r\nPercent: <i>50% = 0.50<\/i>\r\nBase: 500\r\nAmount:\u00a0n\r\n\r\nWrite the percent equation.\r\n<p style=\"text-align: center\">[latex]\\begin{array}{c}\\text{Percent}\\cdot\\text{Base}=\\text{Amount}\\\\0.50\\cdot500=n\\end{array}[\/latex]<\/p>\r\nMultiply.\r\n<p style=\"text-align: center\">[latex]\\left(0.50\\right)\\left(500\\right) = n[\/latex]<\/p>\r\n<p style=\"text-align: center\">[latex]250 = n[\/latex]<\/p>\r\n\r\n<h4>Answer<\/h4>\r\nThis tells us that the final is worth 250 points.\r\n<p style=\"text-align: center\">[\/hidden-answer]<\/p>\r\n\r\n<\/div>\r\nIn the following video, an example of using a pie chart to determine a percent of a whole is shown.\r\n\r\nhttps:\/\/youtu.be\/TAUDMvl8Vg8\r\n<h2>Summary<\/h2>\r\nWhen solving application problems with percents, it is important to be extremely careful in identifying the percent, whole, and amount in the problem. Once those are identified, use the percent equation to solve the problem. Write your final answer back in terms of the original scenario.","rendered":"<div class=\"bcc-box bcc-highlight\">\n<h3>Learning Objectives<\/h3>\n<ul>\n<li>Solve percent change and interest problems\n<ul>\n<li>Calculate discounts and markups using percent<\/li>\n<li>Calculate interest earned or owed<\/li>\n<li>Read and interpret data from pie charts as percents<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<h2>Percent Change<\/h2>\n<p>Percents have a wide variety of applications to everyday life, showing up regularly in taxes, discounts, markups, and interest rates. We will look at several examples of how to use percent to calculate markups, discounts, and interest earned or owed.<\/p>\n<div class=\"bcc-box bcc-info\">\n<h3>Example<\/h3>\n<p>Jeff has a coupon at the Guitar Store for 15% off any purchase of $100 or more. He wants to buy a used guitar that has a price tag of $220 on it. Jeff wonders how much money the coupon will take off of the $220 original price<i>.<\/i><\/p>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q285084\">Show Solution<\/span><\/p>\n<div id=\"q285084\" class=\"hidden-answer\" style=\"display: none\">Simplify the problems by eliminating extra words.<\/p>\n<p style=\"text-align: center\">How much is 15% of $220?<\/p>\n<p>Identify the percent, the base, and the amount.<\/p>\n<p>Percent: 15%<br \/>\nBase: 220<br \/>\nAmount: <i>n<\/i><\/p>\n<p>Write the percent equation.<\/p>\n<p style=\"text-align: center\">[latex]\\begin{array}{c}\\text{Percent}\\cdot\\text{Base}=\\text{Amount}\\\\15\\%\\cdot220=n\\end{array}[\/latex]<\/p>\n<p>Convert 15% to 0.15, then multiply by 220. 15% of $220 is $33.<\/p>\n<p style=\"text-align: center\">[latex]0.15\\cdot220=33[\/latex]<\/p>\n<h4>Answer<\/h4>\n<p>The coupon will take $33 off the original price.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>The example video that follows shows how to use the percent equation to find the amount of a discount from the price of a phone.<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-1\" title=\"Percent App:  Find the Amount of Savings from a Discount\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/bC7GUc1K6LU?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>You can estimate to see if the answer is reasonable. Since 15% is half way between 10% and 20%, find these numbers.<\/p>\n<p style=\"text-align: center\">[latex]\\begin{array}{c}10\\%\\,\\,\\text{of}\\,\\,220=0.1\\cdot220=22\\\\20\\%\\,\\,\\text{of}\\,\\,220=0.2\\cdot220=44\\end{array}[\/latex]<\/p>\n<p>The answer, 33, is between 22 and 44. So $33 seems reasonable.<\/p>\n<p>There are many other situations that involve percents. Below are just a few.<\/p>\n<h2>Interest<\/h2>\n<p>When a person takes out a loan, most lenders charge interest on the loan. <strong>Interest<\/strong> is a fee or change for borrowing money, typically a percent rate charged per year. We can compute simple interest by finding the interest rate percentage of the amount borrowed, then multiply by the number of years interest is earned.<\/p>\n<div class=\"textbox shaded\">\n<h3>Simple Interest Equation<\/h3>\n<p style=\"text-align: center\">[latex]I=p\\cdot{r}\\cdot{t}[\/latex]<\/p>\n<p>Where:<\/p>\n<p><i>I<\/i> is the <strong>interest<\/strong> paid<\/p>\n<p><i>p<\/i> is the <strong>principal<\/strong>\u2014the original amount of money borrowed<\/p>\n<p><i>r<\/i> is the <strong>interest rate<\/strong>, a per-year rate, written as a decimal<\/p>\n<p><i>t<\/i> is the <strong>time<\/strong> of the loan, expressed in years or portions of a year<\/p>\n<\/div>\n<div class=\"bcc-box bcc-info\">\n<h3>Example<\/h3>\n<p>Treasury Notes (T-notes) are bonds issued by the federal government to cover its expenses. Suppose you obtain a $1,000 T-note with a 4% annual rate, with a maturity in 2 years. How much interest will you earn?<\/p>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q694437\">Show Solution<\/span><\/p>\n<div id=\"q694437\" class=\"hidden-answer\" style=\"display: none\">Identify the information given in the problem.<\/p>\n<p>Interest,<i> I<\/i>: unknown<\/p>\n<p>Principal, <i>p<\/i>: $1000<\/p>\n<p>Rate, <i>r<\/i>: [latex]4\\%=0.04[\/latex]<\/p>\n<p>Time, <i>t<\/i>: 2 years<\/p>\n<p>Put the information in the simple interest equation.<\/p>\n<p style=\"text-align: center\">[latex]I=1000\\cdot0.04\\cdot2[\/latex]<\/p>\n<p>Multiply.<\/p>\n<p style=\"text-align: center\">[latex]I=80[\/latex]<\/p>\n<h4>Answer<\/h4>\n<p>You would earn $80 in interest.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>In the following video, you are shown how to find how much interest is earned on a specified investment amount.<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-2\" title=\"Determine the Amount of Interest Earned (Simple Interest)\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/iVmetUlbheY?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<div class=\"bcc-box bcc-info\">\n<h3>Example<\/h3>\n<p>A friend asks to borrow $240, offering to repay you $250 in 1 month. What annual interest rate is this equivalent to?<\/p>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q470866\">Show Solution<\/span><\/p>\n<div id=\"q470866\" class=\"hidden-answer\" style=\"display: none\">Identify the information given in the problem. Here your friend is paying back $10 more than he borrowed, so that is the interest paid.<\/p>\n<p>Interest,<i> I<\/i>: $10<br \/>\nPrincipal, <i>p<\/i>: $240<br \/>\nRate, <i>r<\/i>: unknown<br \/>\nTime, <i>t<\/i>: 1 month<\/p>\n<p>Convert the time to years.<\/p>\n<p style=\"text-align: center\">[latex]1\\,\\,\\text{month}=\\frac{1}{12}\\,\\,\\text{year}[\/latex]<\/p>\n<p>Put the information in the simple interest equation.<\/p>\n<p style=\"text-align: center\">[latex]10=240\\cdot{r}\\cdot\\frac{1}{12}[\/latex]<\/p>\n<p>Regroup and simplify.<\/p>\n<p style=\"text-align: center\">[latex]\\begin{array}{l}10=r\\cdot240\\cdot\\frac{1}{12}\\\\\\\\10=r\\cdot\\frac{240}{12}\\\\\\\\10=r\\cdot20\\end{array}[\/latex]<\/p>\n<p>Divide to undo the multiplication.<\/p>\n<p style=\"text-align: center\">[latex]r=10\\div20=0.50[\/latex]<\/p>\n<p>Rewrite as a percent.<\/p>\n<p style=\"text-align: center\">[latex]0.50=50\\%[\/latex]<\/p>\n<h4>Answer<\/h4>\n<p>This is equivalent to a 50% annual interest rate.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<p>The example video that follows shows how to determine the annual simple interest rate.<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-3\" title=\"Determine a Simple Interest Rate For a Loan with Known Interest\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/SgnE7BJQG10?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2>Pie Charts<\/h2>\n<p>Circle graphs, or pie charts, represent data as sections of the circle (or \u201cpieces of the pie\u201d), corresponding to their percentage of the whole. Circle graphs are often used to show how a whole set of data is broken down into individual components.<\/p>\n<p>Here\u2019s an example. At the beginning of a semester, a teacher talks about how she will determine student grades. She says, \u201cHalf your grade will be based on the final exam and 20% will be determined by quizzes. A class project will also be worth 20% and class participation will count for 10%.\u201d In addition to telling the class this information, she could also create a circle graph.<\/p>\n<p style=\"text-align: center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/2011\/2017\/06\/07185016\/image074.gif\" alt=\"image\" width=\"373\" height=\"264\" \/><\/p>\n<p>This graph is useful because it relates each part\u2014the final exam, the quizzes, the class project, and the class participation\u2014to the whole.<\/p>\n<div class=\"bcc-box bcc-info\">\n<h3>Example<\/h3>\n<p>If the total number of points possible in the class is 500, how many points is the final exam worth?<\/p>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q956080\">Show Solution<\/span><\/p>\n<div id=\"q956080\" class=\"hidden-answer\" style=\"display: none\">Simplify the problem by eliminating extra words.<\/p>\n<p style=\"text-align: center\">What is 50% of 500?<\/p>\n<p>Identify the percent, the base, and the amount.<\/p>\n<p>Percent: <i>50% = 0.50<\/i><br \/>\nBase: 500<br \/>\nAmount:\u00a0n<\/p>\n<p>Write the percent equation.<\/p>\n<p style=\"text-align: center\">[latex]\\begin{array}{c}\\text{Percent}\\cdot\\text{Base}=\\text{Amount}\\\\0.50\\cdot500=n\\end{array}[\/latex]<\/p>\n<p>Multiply.<\/p>\n<p style=\"text-align: center\">[latex]\\left(0.50\\right)\\left(500\\right) = n[\/latex]<\/p>\n<p style=\"text-align: center\">[latex]250 = n[\/latex]<\/p>\n<h4>Answer<\/h4>\n<p>This tells us that the final is worth 250 points.<\/p>\n<p style=\"text-align: center\"><\/div>\n<\/div>\n<\/div>\n<p>In the following video, an example of using a pie chart to determine a percent of a whole is shown.<\/p>\n<p><iframe loading=\"lazy\" id=\"oembed-4\" title=\"Percent App: Find the Percent of An Amount After Reading a Pie Chart\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/TAUDMvl8Vg8?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2>Summary<\/h2>\n<p>When solving application problems with percents, it is important to be extremely careful in identifying the percent, whole, and amount in the problem. Once those are identified, use the percent equation to solve the problem. Write your final answer back in terms of the original scenario.<\/p>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-4517\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Original<\/div><ul class=\"citation-list\"><li>Revision and Adaptation. <strong>Provided by<\/strong>: Lumen Learning. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/about\/pdm\">Public Domain: No Known Copyright<\/a><\/em><\/li><\/ul><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Percent App: Find the Amount of Savings from a Discount. <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com) for Lumen Learning. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/bC7GUc1K6LU\">https:\/\/youtu.be\/bC7GUc1K6LU<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Percent App: Find a Price Before Tax From Total Price. <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com) for Lumen Learning. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/qgafD4z8OUE\">https:\/\/youtu.be\/qgafD4z8OUE<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Find a Percent of Increase Using a Percent Equation. <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com) for Lumen Learning. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/6YYpqlSiF74\">https:\/\/youtu.be\/6YYpqlSiF74<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Determine the Amount of Interest Earned (Simple Interest). <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com) for Lumen Learning. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/iVmetUlbheY\">https:\/\/youtu.be\/iVmetUlbheY<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Determine a Simple Interest Rate For a Loan with Known Interest. <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com) for Lumen Learning. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/SgnE7BJQG10\">https:\/\/youtu.be\/SgnE7BJQG10<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Percent App: Find the Percent of An Amount After Reading a Pie Chart. <strong>Authored by<\/strong>: James Sousa (Mathispower4u.com) for Lumen Learning. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/youtu.be\/TAUDMvl8Vg8\">https:\/\/youtu.be\/TAUDMvl8Vg8<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><li>Unit 5: Percents, from Developmental Math: An Open Program. <strong>Provided by<\/strong>: Monterey Institute of Technology and Education. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"http:\/\/nrocnetwork.org\/dm-opentext\">http:\/\/nrocnetwork.org\/dm-opentext<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em><\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t 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