SOLUTION: Andy's average grade for his four tests in math class is 87%. What grade does he have to get on his next test to reach an average of 90% for all five test?

SOLUTION: Andy's average grade for his four tests in math class is 87%. What grade does he have to get on his next test to reach an average of 90% for all five test?

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Question 1000810: Andy's average grade for his four tests in math class is 87%. What grade does he have to get on his next test to reach an average of 90% for all five test?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
He cannot.
To average 90 on all five tests, he would need 450 points.
He has 4 x 87 = 348 points.
He would need 102% on the fifth one.
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