Water Balloon fight riddle


Jacob and John were preparing to have a water balloon fight. “No Fair” cried Jacob, “You have 3 times as many as I do!” John said “Fine!” and gave Jacob 10 more balloons. “Still not fair!” argued Jacob, “You still have twice as many as I do.” How many more balloons must John give Jacob for them to have the same number?

SherlockHolmes Expert Asked on 2nd April 2019 in Math Puzzles.
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  • 2 Answer(s)


    They started with x and 3x balloons.
    After giving 10 balloons they have x+10 and 3x-10 balloons and 2(x+10) = 3x-10.
    This gives x=30
    They started with 30 and 90 balloons.
    After giving 10 balloons they have 40 and 80 balloons.
    When John give Jacob another 20 balloons they both have 60 balloons

    CugelTheWise Expert Answered on 2nd April 2019.
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    John must give Jacob 20 more balloons.

    Ari Scholar Answered on 26th January 2020.
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