SOLUTION: Jim has grades of 87, 83, and 90 on three math tests. What is the lowest score he can get on the next test to have an average of at least 87
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Question 1010374: Jim has grades of 87, 83, and 90 on three math tests. What is the lowest score he can get on the next test to have an average of at least 87
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
(87+83+90+x)/4 ≥ 87
260+x/4 ≥ 87 Multiply both sides times 4 (on the left 4 multiplying and 4 dividing cancel each other):
260+x ≥ 348 Subtract 260 from both sides:
x ≥ 88
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