Question
Asked Oct 14, 2019
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How many gallons of a 15% acid solution must be mixed with 5 gal of a 20% acid solution to make a 16% acid solution?

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Expert Answer

Step 1

Let x gal of 15% acid solution must be mixed with 5 gal of a 20% acid solution .

So total solution = (x+5) gal.

Step 2

x gal of 15% acid solution has acid= 0.15x gal 

5 gal of a 20% acid solution has acid= 5 x 0.2...

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