document.write( "Question 1139874: If I have a 79.37% in a class with tests being worth 50%, what would I need to make on the next test in order to bring my grade up to atleast a 90%? \n" ); document.write( "
Algebra.Com's Answer #760366 by Theo(13342)\"\" \"About 
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based on these numbers, i don't believe you'll be able to get an overall grade of 90%.\r
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\n" ); document.write( "\n" ); document.write( "the test is worth 50% of your grade.\r
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\n" ); document.write( "\n" ); document.write( "that means that 79.37% is worth the other 50% of your grade.\r
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\n" ); document.write( "\n" ); document.write( "let x equal the grade you need on your first 50%.\r
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\n" ); document.write( "\n" ); document.write( "your total grade will then be .5 * x + .5 * 79.37%.\r
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\n" ); document.write( "\n" ); document.write( "since you want your total grade to be equal to 90%, then the equation becomes:\r
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\n" ); document.write( "\n" ); document.write( "90% = .5 * x + .5 * 79.37%.\r
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\n" ); document.write( "\n" ); document.write( "subtract .5 * 79.37% from both sides of the equation to get:\r
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\n" ); document.write( "\n" ); document.write( "90% - .5 * 79.37% = .5 * x\r
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\n" ); document.write( "\n" ); document.write( "solve for x to get x = (90% - .5 * 79.37%) / .5 = 100.63%.\r
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\n" ); document.write( "\n" ); document.write( "unless you can get more than 100% on a test, you won't be able to get 90% overall grade because 100.63% is greater than 100%.\r
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\n" ); document.write( "\n" ); document.write( "if you can't get more than 100% on a test, then the best you can do is .5 * 100% + .5 * 79.37% = 89.685%.\r
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