SOLUTION: how many gallons of a 60% acid solution must be mixed with a 75% acid solution to obtain 20L of a 72% solution?
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Question 1049928: how many gallons of a 60% acid solution must be mixed with a 75% acid solution to obtain 20L of a 72% solution?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
how many gallons of a 60% acid solution must be mixed with a 75% acid solution to obtain 20L of a 72% solution?
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s = 60% amount
f = 75% amount
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s + f = 20 (total solution)
60s + 75s = 20*72 (total acid)
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