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December 21, 2014

December 21, 2014

Posted by **student** on Monday, December 7, 2009 at 8:28pm.

- math -
**Ms. Sue**, Monday, December 7, 2009 at 8:30pmLet x = the number of girls.

Cross multiply and solve for x.

5/7 = 15/x

Add the number of boys and girls together.

- math -
**Paula**, Monday, December 7, 2009 at 8:31pm15 boys is three times the number of boys originally, so there are 21 girls, meaning there is a total of 36 students.

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