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Rents a van at daily rate of $19.95 plus .39/mile, another company will rent same van for $39.95 plus .29/mile. for what mileage are the costs the same?

  • math -

    39.95-19.95=20
    .39-.29=.10
    20/.10=200m

  • math -

    cost1 = .39x +19.95 , where x is the number of mile
    cost2 = .29x + 39.95

    when is cost1 = cost2 ?
    .39x + 19.95 = .29x + 39.95
    .1x = 20
    x= 20/.1 = 200

    the cost is the same at 200 miles

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