SOLUTION: a student has forgotten the following grades on his test: 87,95, 86, and 88. he needs to have an average of 90 to receive an A for the class. what is the minimum grade he must get

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Question 1081831: a student has forgotten the following grades on his test: 87,95, 86, and 88. he needs to have an average of 90 to receive an A for the class. what is the minimum grade he must get on the last test in order to have an average of 90.
Answer by addingup(3677) About Me  (Show Source):
You can put this solution on YOUR website!
(87+95+86+88+x)/5 =< 90
87+95+86+88+x = 450
add numbers on left, subtract the sum from 450 and you'll have your answer.