document.write( "Question 545923: I have an 83% total in my class. I'm taking the final which counts for 30% of my final grade. What percentage do I need to score in order to have a 70% or higher? \n" ); document.write( "

Algebra.Com's Answer #355781 by JBarnum(2146) $\"\"$ $\"About$

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83%=7/10 or 70% of your grade
\n" ); document.write( "x=3/10 or 30% of your grade
\n" ); document.write( "so 7/10+3/10=10/10
\n" ); document.write( "and since your looking for a 70% you set equation = to 70 because that is the average you are looking for.
\n" ); document.write( "the reason i multiply 83 by 7 is because the average of $\"%2883%2B83%2B83%2B83%2B83%2B83%2B83%2B83%29%2F7=83\"$ which is your given percentage, though your grades may be differentbut the result is same and for this purpose its just easier to calculate.\r
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\n" ); document.write( "\n" ); document.write( " $\"%2883%287%29%2Bx%283%29%29%2F10=70\"$
\n" ); document.write( " $\"581%2B3x=700\"$
\n" ); document.write( " $\"3x=119\"$
\n" ); document.write( " $\"x=39.6667\"$ for a 70%
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