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April 26, 2015

Homework Help: Math

Posted by John on Monday, January 26, 2009 at 12:29am.

Period 1 has 15 students in it and a test average of 86%. Period 2 has 21 students in it and an average of 88%. Period 3 has 12 students in it and an average of 95%. Use weighted means to find the overall average of the classes.

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