SOLUTION: a mixture of acid and water is 35% acid. if the mixture contains a total of 40 liters.how many liters of pure water in the mixture? how many liters of pure acid in the mixture?

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Question 330153: a mixture of acid and water is 35% acid. if the mixture contains a total of 40 liters.how many liters of pure water in the mixture? how many liters of pure acid in the mixture?
Answer by Fombitz(32388) About Me  (Show Source):
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Let A be the amount of pure water(0% acid), B the amount of pure acid (100% acid).
1.A%2BB=40
2.0%2AA%2B100%2AB=35%2840%29=1400
From eq. 2,
100B=1400
B=14
Then from eq. 1,
A%2B14=40
A=26
.
.
.
26 liters of pure water, 14 liters of 100% acid.