Math

For every 8 chin-ups Doug did during the physical fitness test, Adam did 3. Doug was able to do 15 more chin-ups than Adam. How may chin-ups did Adam do?

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  1. number of push-ups for Doug = 8x
    number of push-ups for Adam = 3x

    solve:

    8x - 3x = 15

    take over

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    2. 👎
  2. 8x - 3x = 15
    //Combine like terms
    5x = 15
    //Divide both sides by 5 to get x on one side
    5x / 5 = 15 / 5
    x = 3

    //Test
    8(3) - 3(3) = 15
    24 - 9 = 15

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