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-- To average 70 on four tests, the total of the scores has to be 280 .

-- You already have (64 + 69 + 73) = 206 on the first three tests.

-- You need (280 - 206) = 74 on the fourth one in order to average 70 on all four.

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โˆ™ 2012-10-05 18:46:12
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Q: What is the average i need to get a 70 percent in class and i have 64 69 73 on three tests?
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