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word problem

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a farmer has 800 yards of fencing to enclose a rectangular pasture. Since one side of the pasture boarders a river that side does not need to be fenced. if the side perpendicular to the river must be twice as long as the side parallel to the river, what are the dimensions of the pasture.

  • word problem -

    Let x = the side parallel to river
    then
    2x = the two sides perpendicular to the river

    x + 2(2x) = 800

    x + 4x = 800

    5x = 800
    5x/5 = 800/5

    x = 160
    2x = 2(160) =320

    320 yard by 160 yard

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