Algebra

A chemical manufacturer wishes to fill an order for 700 gallons of a 24% acid solution. Solutions of 20% and 30% are in stock.

How many gallons of 20% acid solution will be used in the desired mixture?

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  1. amount of the 20% stuff ---- x gallons
    amount of the other stuff ---- 700-x

    .2x +.3(700-x) = .24(700)

    solve for x to reveal the mystery.

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  2. x = 420

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