# SOLUTION: How many Liters of a 60% acid solution must be mixed with a 75% acic solution to get 20 Liters of a 72% solution? Here is what I have tried. But it does not make sense. x=60%

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 Question 42269: How many Liters of a 60% acid solution must be mixed with a 75% acic solution to get 20 Liters of a 72% solution? Here is what I have tried. But it does not make sense. x=60% y=75% x+y=20L 60%x+75%y=72% I then tried to solve for x and y and the answers were x=19.04 y=.96 I do not know what units. I use to be good at stuff like this, but I have not done it since a year ago. Please help me.Answer by fractalier(2101)   (Show Source): You can put this solution on YOUR website!Let x be the amount of 60% acid. The setup is like this: 60x + 75(20-x) = 72(20) 60x + 1500 - 75x = 1440 -15x = -60 x = 4 Thus 4 L of 60% and 16 L of 75% acid...