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1 December, 19:34

Captain Tellez plans to reach a cruising altitude in his passenger plane and then maintain a cruising speed of 570 miles per hour for approximately 400 miles. Which is closest to the length of time, in minutes, that his plane will maintain cruising speed?

A. 0.70

B. 1.43

C. 42

D. 86

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Answers (1)
  1. 1 December, 19:52
    0
    option (c)

    42 minutes

    Step-by-step explanation:

    Given in the question:

    cruising speed of passenger plane = 570 miles/hour

    distance passenger plane travelled = 400 miles

    Formula to use

    distance = speed x time

    time = distance / speed

    time = 400 / 570

    = 0.7018 hours

    1 hour = 60 minutes

    228000 hours = 60 x 0.7018 minutes

    = 42.1052 minutes

    ≈ 42 minutes

    Closest to the length of time, in minutes, that Captain Tellez's plane will maintain cruising speed is 42 minutes.
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