SOLUTION: Joe's math scores are 88, 70, 100, and 94. What is the lowest score he can get on the next test to average a 90?
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Question 1009026: Joe's math scores are 88, 70, 100, and 94. What is the lowest score he can get on the next test to average a 90?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
We add them together with his unknown fifth score (call it x) and divide by five, setting it up as:
(88+70+100+94+x)/5 >= 90
88+70+100+94+x >= 450
352 + x >=450
x >= 98
He needs at least a 98.
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