document.write( "Question 894468: if your average in the first 7th quizzes is 72% and the passing grade is 75%, what grade should you get in the 8th quiz to get a passing average?
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Algebra.Com's Answer #542090 by rfer(16322)\"\" \"About 
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(7*0.72+x)/8=0.75
\n" ); document.write( "5.04+x=0.75*8
\n" ); document.write( "x=6-5.04
\n" ); document.write( "x=0.96=96%
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