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.
Accepted Solution
A:
Equation for solution volume: x + y = 50
Equation for solution concentration: 20 is 0.4(50 L) 0.25x + 0.5y = 20