SOLUTION: Need 5 ounces of a solution that is 65% acid and 35% distilled water. There is no undiluted acid in the chemistry lab, but they do have 2 flasks of diluted acid. Flask A contains

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Question 843773: Need 5 ounces of a solution that is 65% acid and 35% distilled water. There is no undiluted acid in the chemistry lab, but they do have 2 flasks of diluted acid. Flask A contains 70% acid and 30% distilled water. Flask B contains 20% acid and 80% distilled water.
A. write a system of equations that could be used to determine how many ounces they need to pour from each flask to make their solution.
B. Solve your sytem of equations . How many ounces from each flask do we need?
thanks for your help

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
5*.65=.7a+.2b
a+b=5
a=4.5, b=0.5