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12 of the girls are surfers. If there are two girls for every boy, thn how many boys and how many girls are there?
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by Renee052 at February 27, 2010

Sovle each system by the method of your choice addition or substitution.

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x = boys y = girls y = 2x (2/3)x + (1/12)y = 385 multiply by 12 to get 8x + y = 4620 replace y with 2x 10x = 4620 x = 462, y = 924

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5808

Nancy095 February 27, 2010