SOLUTION: Dmitri needs 7 liters of a 36% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of

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Question 516622: Dmitri needs 7 liters of a 36% solution of sulfuric acid for a research project in molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 56% solution and the other an unlimited supply of the 21% solution. Write out the equation you need to solve this problem and find how many liters of each solution Dmitri should use?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.56x+.21y=.36*7
x+y=7