SOLUTION: Rita has scored 64, 71, and 83 on her previous three tests. What score does she need on her next test so her average is 78?
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Question 515712: Rita has scored 64, 71, and 83 on her previous three tests. What score does she need on her next test so her average is 78? Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! (64+71+83+x)/4 = 78
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(64+71+83+x) = 4*78
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218 +x = 312
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x = 94
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Rita needs at least a 94 on the fourth test to raise her average to 78.
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