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28 November, 13:28

A 12-foot by 15-foot patio is increased by placing a stone border around the patio. The width of the border is the same all around the patio. The perimeter of the patio after it is expanded is 74 feet. The equation which represents x, the width of the border is 2[ (12+2x) + 15+2x) ]=74. What is the width of the border?

1) 2 1/2 feet

2) 3 feet

4) 5 feet

5) 8 1/2 feet

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Answers (2)
  1. 28 November, 14:47
    0
    The correct answer is A) 2 1/2 feet
  2. 28 November, 15:24
    0
    12 x 14 = 168 square feet.

    If the pavers were 1 foot by 1 foot we would need 168 pavers

    BUT ... your paver is 8 inches which is 8/12 or 2/3 of a foot.

    It is 2/3 times 2/3 or 4/9 square ft

    168 divided by 4/9

    which is the same as 168 times 9/4

    That will get you to 378.
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