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March 25, 2017

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A small slot machine holds 500 coins consisting of nickels, dimes, and quarters. The number of quarters is twice the number of dimes. If the value of all the coins is $88.00, how many nickels, were in the slot machine?

  • introductory Algebra - ,

    dimes --- x
    quarters -- 2x
    nickels --- 500 - x - 2x or 500-3x

    10x + 25(2x) + 5(500-3x) = 8800

    solve for x, then found 500-3x

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