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March 27, 2017

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David put 155 feet of plastic edging around the outside edge of the concrete surrounding his pool. The concrete in 17.5 feet wide, how long is the concrete.

help me solve please, very confused.

  • math - ,

    Let x = length. Solve for x.

    (2*17.5) + 2x = 155
    35 + 2x = 155
    2x = 155 - 35
    2x = 120
    x = ?

  • math - ,

    60...thanks!

  • math - ,

    You're welcome.

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