algebra

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a chemist has 12% hydrochloric acid+24% hydrochloric. How many of each should be 16 liters of 21%hydrochloric?

  • algebra -

    12% needed --- x
    24% needed --- 16-x

    solve:
    .12x+ .24(16-x) = .21(16
    times 100
    12x + 24(16-x) = 21(16)
    take over....

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