ruthadugna123 ruthadugna123

03-10-2019
Mathematics

contestada

How much pure acid should be mixed with 6 gallons of a 20% acid solution in order to get a 40% acid solution

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graysonrevves42 graysonrevves42

03-10-2019

Let A be the amount of 100% acid.

100A+20*(6)=40*(A+6)

100A+120=40A+240

60A=120

A=2 gallons

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