Question 1022373
The sum of scores on the first five exams:
(sum of scores)/(number of scores)=average
(sum of scores)/(5 exams)=85.6
sum of scores=428
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To average 85 on 6 exams:
(sum of scores)/(6 exams)=85
sum of scores=510
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Current sum=428
Desired sum=510
Needed score=Desired sum-current sum=510-428=82
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ANSWER: Willie must score 82 to average 85 over all his exams.
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