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March 24, 2017

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a 68 mile trip uses 2 gallons of gas. how many gallons would you use on a 110 mile trip? round to the nearest tenth of a gallon.

  • 10th grade algebra not ms.sue - ,

    I would just set it up as a proportion and cross multiply. 68/2=110/? or 2/68=?/110

  • 10th grade algebra not ms.sue - ,

    what is the ? for

  • 10th grade algebra not ms.sue - ,

    The ? is the answer. You solve for that.

  • 10th grade algebra not ms.sue - ,

    how like what do i do

  • 10th grade algebra not ms.sue - ,

    68 = 110
    ---- ----
    2 x


    This is how to set up the proportion that zorro was talking about, although he did it incorrectly.
    Cross multiply:
    110 (2) = 220
    68 (x) = 68x

    Therefore:
    220 = 68x

    Solve for x by dividing by 68 on both sides.

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