document.write( "Question 867774: My average in my criminology class is 68%. what do i need on my final test which is 20% of my grade, to get a 70 average? \n" ); document.write( "

Algebra.Com's Answer #523176 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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My average in my criminology class is 68%.
\n" ); document.write( " what do i need on my final test which is 20% of my grade, to get a 70 average?
\n" ); document.write( ":
\n" ); document.write( "let x = your find test grade
\n" ); document.write( ":
\n" ); document.write( "From the given information we know the final test is 1/5 of your grade
\n" ); document.write( "Then your grade to this point is 4/5 of your grade and is 68%
\n" ); document.write( "therefore
\n" ); document.write( " $\"%28%284%2868%29%2Bx%29%29%2F5\"$ = 70
\n" ); document.write( "mult both sides by 5
\n" ); document.write( "4(68) + x = 5(70)
\n" ); document.write( "272 + x = 350
\n" ); document.write( "x = 350 - 272
\n" ); document.write( "x = 78% required in you Final test
\n" ); document.write( ":
\n" ); document.write( ":'
\n" ); document.write( "You can confirm this yourself in the initial equation. \n" ); document.write( "

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