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25 December, 08:37

Which speed is the fastest: A. 18 feet in 20 minutes B. 90 feet in 2.5 hours X. 20 feet in 1.5 hours D. 3 2/3 feet in 15 minutes

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  1. 25 December, 08:55
    0
    Convert each item to feet/minute:-

    A = 18/20 = 0.9 ft/min

    B = 90 / (2.5 * 60) = 90 / 150 = 0.6 ft/min

    C = 20 / 90 = 0.22 ft/min

    D = 3 2/3 / 15 = 11/3 * 1/15 = 0.24 ft/min

    So the answer is A.
  2. 25 December, 10:11
    0
    Answer is c.

    so you are going to divide minutes over feet to get feet per minute.

    20/18=0.9 ft per min

    150/90=1.67 ft per min

    90/20=4.5 ft per min

    15/3 and two-thirds = 4.09
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