SOLUTION: how many liters of 60% acid solution must be mixed with a 75% acid solution to get 20 liters of a 72% solution?
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Question 343306: how many liters of 60% acid solution must be mixed with a 75% acid solution to get 20 liters of a 72% solution?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let A be the amount of 60% acid solution, B the amount of 75% acid solution.
1.
.
.
.
2.
From eq. 1,
Substitute into eq. 2,
liters
Then from eq. 1,
liters
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