Problema Solution
How many gallons of a 10% acid solution must be mixed with 5 gal of a 20% acid solution to make a 12% acid solution?
Answer provided by our tutors
let
x = gallons of 10% acid solution
0.10x + 0.20*5 = 0.12(x + 5)
by solving we find
x = 20 gal
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20 gallons of 10% acid solution should be used for the mixture.