SOLUTION: In a chemistry class, 24 gallons of a 12% saline solution must be mixed with a 20% saline solution to get a 14% saline solution. How many gallons of the 20% solution are needed? 5

Question 1048845: In a chemistry class, 24 gallons of a 12% saline solution must be mixed with a 20% saline solution to get a 14% saline solution. How many gallons of the 20% solution are needed? 5,6,8, or 10.5 gallons?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
v, how much gallons of the 20% saline to use

Numerator is how much pure salt (sodium chloride) but 100 times more.
Denominator is how much volume.
The right side member is the percentage of salt in solution wanted.

Solve for v.

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Yes, v=8.
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