SOLUTION: how many liters of a 25% alcohol solution must be mixed with a 12% solution to get 13L of a 15% solution?

Question 509652: how many liters of a 25% alcohol solution must be mixed with a 12% solution to get 13L of a 15% solution?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
---------percent ---------------- quantity
Alcohol I 25 ---------------- x liters
Alcohol II ---------------- 13 - x liters
Mixture ---------------- 13

25x+12(13-x)=15*13

25x+156-12x=195
25x-12x=195-156
13x=39
/ 13
x = 3 liters 25.00% Alcohol I
10 liters 12.00% Alcohol II

RELATED QUESTIONS
How many liters of a 25% alcohol solution must be mixed with a 12% solution to get 13L of (answered by richwmiller)

how many liters of a 25% alcohol solution must be mixed wuth a 12% solution to get 13... (answered by Maths68)

How many liters of 15% alcohol solution must be mixed with 25 liters of a 20% alcohol... (answered by josgarithmetic)

how many liters of a 10 alcohol solution must be mixed with 12 liters of a 20% alcohol... (answered by stanbon)

how many liters of 25% alcohol solution and 15% alcohol solution must be mixed to obtain... (answered by Alan3354)

How many liters of a 24 percent alcohol solution must be mixed with 20 liters of a 46... (answered by ankor@dixie-net.com)

In chemistry class, 10 liters of a 15% alcohol solution must be mixed with a 75% alcohol... (answered by jorel1380)

How many liters of a 10% alcohol solution should be mixed with 12 liters of a 20% alcohol (answered by Alan3354)

how many liters of a 10% alcohol solution must be mixed with how many liters of a 50%... (answered by mananth)