SOLUTION: Lucy has scored 77,72,74,74 and on her previous four tests. What score does she need on her next test so that her average (mean) is 77
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Question 526279: Lucy has scored 77,72,74,74 and on her previous four tests. What score does she need on her next test so that her average (mean) is 77 Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Lucy has scored 77,72,74,74 and on her previous four tests. What score does she need on her next test so that her average (mean) is 77
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77 + 72 + 74 + 74 = 297 for 4 tests
77*5 = 385 for 5 tests
385 - 297 = 88
