document.write( "Question 1196293: Allanʹs 4 quiz scores in his math class are 87, 89, 88, and 78. What score does he need to obtain on
\n" ); document.write( "his exam to average an 85 if an exam counts as much as two quizzes? \n" ); document.write( "
Algebra.Com's Answer #829100 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "You have 4 responses already; however, they are all very similar, so I will show a different method that is sometimes convenient to use in a problem involving the average of several numbers that are relatively close together.

\n" ); document.write( "Comparing each quiz score to the desired average, we have the following:
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document.write( "   87:  +2\r\n" );
document.write( "   89:  +4\r\n" );
document.write( "   88:  +3\r\n" );
document.write( "   78:  -7\r\n" );
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document.write( "total:  +2

\n" ); document.write( "All together, the 4 quiz scores are +2 compared to the desired average. Since the test counts as much as 2 quizzes, the score on the test, to balance the scores on the quizzes, must be -1 compared to the desired average. So the score on the test to make an average of 85 is 85-1 = 84.

\n" ); document.write( "ANSWER: 84

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