February 21, 2017

Homework Help: Math

Posted by Meenaakshi on Tuesday, May 21, 2013 at 3:36pm.

A saline solution is 20% salt.
How many gallons of water must be added to
dilute the mixture to 8 gals of a 15% saline solution?

here is my method:
using c1V1 = c2V2,
(0.2)(V1) = (0.15)(8)
V1 = 6 gals
So, since 8 gals are required to dilute the saline solution of 15%, 8-6 = 2 gals of water must be added. Is my steps correct ? Hope someone can verify. Thanks

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