A saline solution is 20% salt.

Question

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

Answer 1

Yes, it's correct. 2 gals must be added (and well agitated).

Answer 2

Alright thank you! :)