SOLUTION: How many liters of a 3% brine solution must be added to 15 liters of a 12% brine solution to dilute it to an 8% solution?

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Question 788731: How many liters of a 3% brine solution must be added to 15 liters of a 12% brine solution to dilute it to an 8% solution?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
How many liters,u, of a L% brine solution must be added to V liters of a H% brine solution to dilute it to an T% solution?
L%3CT%3CH.

highlight%28V%2AH%2F%28V%2Bu%29=T%29

Solve for the unknown u. You will then have a formula for u. Plug in the actual given values to compute u.