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14 March, 16:11

A plane makes a return journey across the Atlantic Ocean, a distance

of 3800 km each way. From west to east the journey time is 6 hours

12 minutes. Because of the jet stream the plane takes 7 hours 18 minutes

to fly the same journey east to west.

Find the average speed of the plane for each crossing.

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Answers (1)
  1. 14 March, 16:14
    0
    Below in bold.

    Step-by-step explanation:

    6 hours 12 minutes = 6.2 hours

    7 hours 18 minutes = 7.3 hours.

    Average speed = distance / time

    So for West to East, average speed = 3800 / 6.2 = 612.9 km/hour.

    - and for East to West, average speed = 3800 / 7.3 = 520.5 km/hour.

    These values are correct to the nearest tenth.
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