Problema Solution

how much of a 50% alcohol solution must be mixed with 70 gallons of a 22% alcohol solution to obtain a solution that is 40% alcohol?

Answer provided by our tutors

let


x = gal of 50% alcohol solution


0.50x + 0.22*70 = 0.40(x + 70)


by solving we find:


x = 126 gal


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126 gallons of 50% alcohol solution must be used for the mix.