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January 31, 2015

January 31, 2015

Posted by **Jeanette** on Tuesday, March 18, 2008 at 6:55pm.

- hard math -
**Ms. Sue**, Tuesday, March 18, 2008 at 7:01pmYou can set up a ratio like this, with x = the amount of red paint:

3/5 : x/20

Cross multiply: 5x = 60

Solve: x = 12

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