SOLUTION: Christopher has completed three mathematics tests. his mean mark is 69%. what percentage mark does he have to get in his next test to increase the mean to 70%?
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Question 1084173: Christopher has completed three mathematics tests. his mean mark is 69%. what percentage mark does he have to get in his next test to increase the mean to 70%?
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
73
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