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05-07-2017
Mathematics

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How many liters each of a 10% acid solution and a 80% acid solution must be used to produce 70 liters of a 65% acid solution?

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RickyChen RickyChen

05-07-2017

Assume you need x liters 10% acid, y liters 80% acid

Then 10%x + 80%y = 65%*70, and x+y = 70

I get: x = 15, y = 55

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