Homework Help: maths

Posted by minte on Wednesday, March 6, 2013 at 8:57pm.

The mean grade of 10 students was 72.if 2 of the students with grades of 53,75 are cancelled. What should be the mean grade of the remaining?

maths - Ms. Sue, Wednesday, March 6, 2013 at 9:06pm
10 * 72 = 720

720 - 53 - 75 = 592

592/8 = 74

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