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05-02-2018
Mathematics

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how many ounces of 5% hydrochloric acid and 20% hydrochloric acid must be combined to get 10 oz of solution that is 12.5% hydrochloric acid?

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05-02-2018

(.05x + .2y)/10 = .125 (a)
x + y = 10 (b)
a = 12.5
x = 4 1/6
y = 5 5/6

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