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How many gallons of a 25% acid solution should be added with 10 gallons of a 12% acid solution to obtain a 20% acid solution

 Feb 14, 2021
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acid in ingredients    =   acid in final sol'n

 

x = 25% gallon amount

 

.25 x   +  .12 (10)   =     .20 (10+x)

.05x = .8

x = 16 gal of 25% 

 Feb 14, 2021

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