How many gallons of a 15% acid solution must be mixed with 5 gal of a 35% acid s

Algebra
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How many gallons of a 15% acid solution must be mixed with 5 gal of a 35% acid solution to make a 19% acid solution?

Sep 3rd, 2015

Thank you for the opportunity to help you with your question!

let the number of gallons be x

0.15x+0.35*5 = 19%(x+5)

0.15x+1.75 =0.19x+0.95

0.19x-0.15x = 1.75-0.95

0.04x= 0.8

x= 0.8/0.04

x= 20 gallons

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 3rd, 2015

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Sep 3rd, 2015
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Sep 3rd, 2015
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