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Math Help - A problem on the review set

  1. #1
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    Mar 2010
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    A problem on the review set

    You have been asked to design a soccer field. Unlike a football field, whose dimensions cannot vary, a rectangular soccer field may have a width between 50 to 100 yards and a length between 50 to 100 yards. Your soccer field must meet certain specifications. The Perimeter of the field must be 320 yards and length must be 40 yards more than its width. Each square yard of turf will cost you $3/yd^2 and your budget cannot exceed $20,000 for turf. What are the dimension of the field?

    please help me asap cuz my test is tomorrow
    thanks in advance
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  2. #2
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    Joined
    Mar 2010
    Posts
    7
    i did
    2x+2x+80=320
    solve for x
    which got x=60
    so the width would be 60 and length would be 100
    the area= 6000 and I multiply that by 3 and it would cost me $18000 to build the soccer field

    is there mistakes in my work...?
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