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A rectangular floor that measures

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boomgoesthegmat Senior | Next Rank: 100 Posts Default Avatar
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A rectangular floor that measures

Post Thu Apr 28, 2016 1:27 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    A rectangular floor that measures 8 meters by 10 meters is to be covered with carpet squares that each measure 2 meters by 2 meters. If the carpet squares cost $ 12 apiece, what is the total cost for the number of carpet squares needed to cover the floor?
    A) $200
    B) $240
    C) $480
    D) $960
    E) $1920

    B

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    Post Thu Apr 28, 2016 2:11 pm
    8/2 = 4, so we need 4 squares for the width.

    10/2 = 5, so we need 5 squares for the length.

    That means we need 4 * 5 => 20 squares. They're each $12, so the cost is 20*$12 => $240.

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