Fifty liters of a 40% acid solution is obtained by mixing a 25% solution with a 50% solution.

(a) Write a system of equations in which one equation represents the amount of final mixture required and the other represents the percent of acid in the final mixture. Let x and y represent the amounts of the 25% and 50% solutions, respectively.

Question

Alexandra Irwin

7 May, 03:19

+3

Answers (1)

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Rocco Chang · Answer 1

Equation for solution volume:

x + y = 50

Equation for solution concentration: 20 is 0.4 (50 L)

0.25x + 0.5y = 20