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March 30, 2017

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a man paid $8.50 for a small pump and 8 feet of tubing.he paid 12 times as much for the pump as for each foot of tubing.how much did the pump cost? the tubing?

  • math - ,

    let cost of tube be $x per foot
    then cost of pump is $12x

    12x + 8x = 8.5
    solve for x

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