Posted by **Anonymous** on Sunday, February 9, 2014 at 8:41pm.

How much water must be added to 1 liter of a 5% saline to get a 2% saline solution

- Math Mixture Word Problem -
**Steve**, Sunday, February 9, 2014 at 9:18pm
the amount of saline must be the same before and after mixing:

.05(1) + 0(x) = .02(1+x)

.02x = .03

x = 1.5

check:

5% of 1L = .05L saline

2% of 2.5L = .05L saline

or, you can say that since you want 2/5 the concentration, you need 5/2 the original volume, or 2.5L

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