SOLUTION: In six examination papers a girl gets 75, 65, 0, 85, 95 & 55. what must she get in the seventh paper so that her average is 64?
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Question 680623: In six examination papers a girl gets 75, 65, 0, 85, 95 & 55. what must she get in the seventh paper so that her average is 64?
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
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Multiply both sides by 7
375 + x = 7(64)
375 + x = 448
x = 448 - 375
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