Homework Help: math

Posted by Brandyn on Monday, January 31, 2011 at 5:18pm.

In a third grade class 2/5 of the students wear glasses. What fraction of the students do not wear glasses?
If 16 students wear glasses, how many students are in the class altogether?

math - Ms. Sue, Monday, January 31, 2011 at 5:21pm
5/5 - 2/5 = ? students do not wear glasses

2/5 = 16/x

Cross multiply and divide

2x = 80
x = 40 students in the class

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