SOLUTION: The mean of Terry's first 5 test marks is 45. What mark must he score on the sixth test to raise his mean over the six tests to 50?
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Question 672469: The mean of Terry's first 5 test marks is 45. What mark must he score on the sixth test to raise his mean over the six tests to 50? Answer by ReadingBoosters(3246) (Show Source):
You can put this solution on YOUR website! x / 5 = 45
x = 45(5) = 225 points on first 5 tests
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Multiply the inequality by 6
225 + x > 300
x > 300 - 225
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