Question 1151661
(Make a chart  and solve) A  chemist has  two solutions,  Solution A is  8% acetic  acid and Solution B is 20% acetic acid. If he wants 4 liters of an 11% acetic acid solution, how much of solution  A and solution B should he mix ?
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A + B = 4 --- total solution
8A + 20B = 11*(A + B)  --- total acid
etc.
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IDK why a chart is needed.