SOLUTION: Manuel has scored 76,76, and 90 on his previous three tests. What score does he need on his next test so that his average (mean) is 75?

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Question 1171953: Manuel has scored 76,76, and 90 on his previous three tests. What score does he need on his next test so that his average (mean) is 75?
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.

    %2876%2B76%2B90%2Bx%29%2F4 = 75


    76 + 76 +90 + x = 4*75 = 300


    x = 300 - (76 + 76 + 90) = 58.    ANSWER

Solved.

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