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Posted by **Mercedez** on Tuesday, November 15, 2011 at 9:06pm.

- 7th grade math -
**Ms. Sue**, Tuesday, November 15, 2011 at 9:15pmI'd set up a proportion (ratio).

5/12 = b/48

12b = 240

b = 20

- 7th grade math -
**Mercedez**, Tuesday, November 15, 2011 at 9:21pmWhere did you get the 5/12 from when it's 5/7?

- 7th grade math -
**Ms. Sue**, Tuesday, November 15, 2011 at 9:24pmYou're comparing the number of boys with the total.

5 + 7 = 12

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