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February 26, 2015

February 26, 2015

Posted by **Anonymous** on Thursday, February 9, 2012 at 10:23pm.

- Algebra -
**Reiny**, Thursday, February 9, 2012 at 11:28pmlet the amount of the 15% mixture be x ounces

then the amount of the 30% mix is 7.5-x

.15x + .30(7.5-x) = .25(7.5)

times 100

15x + 30(7.5-x) = 25(7.5)

15x + 225 - 30x = 187.5

-15x = -37.5

x = 2.5

Use 2.5 ounces of the 15% mix and

5 ounces of the 30% mix

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