posted by Zhanise

Rebecca has left three bags containing the same number of marbles, plus two marbles left over. She places them on one side of a balance. Chris, who has more marbles than Rebecca, adds marbles to the other side of the balance. He finds that with 29 marbles, the scale balance. How many marbles are in each bag?Assume the bags weigh nothing.

  1. PsyDAG

    let x = # marbles in bag.

    3x + 2 = 29

    Solve for x.

  2. Reiny

    number of marbles in each bag --- x

    3x + 3 = 29

    each bag has 9 marbles

  3. Reiny

    Go with PsyDAG's solution, I hit the 3 key instead of the 2

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