document.write( "Question 931245: if a have 76 average on my class, what grade do i need on my final exam to get a B on the class, if the final is worth 30% of the grade. Assume the range for B is 80% to 90%. \n" ); document.write( "

Algebra.Com's Answer #565505 by TimothyLamb(4379) $\"\"$ $\"About$

You can put this solution on YOUR website!
(1 - 0.30)*76 + 0.30x = 80
\n" ); document.write( "0.30x = 80 - (1 - 0.30)*76
\n" ); document.write( "x = ( 80 - (1 - 0.30)*76 )/0.30
\n" ); document.write( "x = 89.333333333300004
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "you need to get 90 on the final to get a B in the class
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