document.write( "Question 877599: I have a 87% in my class and my final is worth 15%, what grade do I need on my final to pass with an 85 , or 86%? \n" ); document.write( "

Algebra.Com's Answer #529428 by jim_thompson5910(35256) $\"\"$ $\"About$

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Final is worth 15%
\n" ); document.write( "Rest of classwork is worth 85% (since 100 - 15 = 85)\r
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\n" ); document.write( "\n" ); document.write( "Let x = grade on final\r
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\n" ); document.write( "\n" ); document.write( "0.87*0.85 + x*0.15 = 0.85\r
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\n" ); document.write( "\n" ); document.write( "0.7395 + 0.15x = 0.85\r
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\n" ); document.write( "\n" ); document.write( "0.15x = 0.85 - 0.7395\r
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\n" ); document.write( "\n" ); document.write( "0.15x = 0.1105\r
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\n" ); document.write( "\n" ); document.write( "x = 0.1105/0.15\r
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\n" ); document.write( "\n" ); document.write( "x = 0.73666666666667\r
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\n" ); document.write( "\n" ); document.write( "So you need to get at least 73.666666666667% on the final to get an 85% or better as an overall grade. \n" ); document.write( "

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