SOLUTION: a chemist mixed 30% acid and 50% acid solution and produced 5 gallons of 40% solution. How many liters of each were combined to produced the resulting solution?

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Question 932873: a chemist mixed 30% acid and 50% acid solution and produced 5 gallons of 40% solution. How many liters of each were combined to produced the resulting solution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x the amount of the 50%
....
.50x + .30 (5G-x) = .40(5G)
x = .10(5G)/.20 = 2.5G ,the amount of the 50%
...
(5G-x), the amount of the 30%