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16 April, 23:03

Jack travelled 360 km at an average speed of 80 km/h. Elaine

took 1.5 hours more to complete the same amount of distance.

What was Elaine's average speed for the whole journey?

km/h

+1
Answers (1)
  1. 16 April, 23:29
    0
    Average speed of Elain = 60 km/h

    Explanation:

    Total Distance covered by Jack = 360km

    Average Speed of Jack = 80 km/h

    Time taken by Jack to complete his journey = Distance / Average speed = 360 km / 80 km/h

    Time taken by Jack to complete his journey = 4.5 hours

    As it is given the both Jack and Elain travelled the same amount of distance:

    Total distance travelled by Elain = 360 km

    It is given that Elain took 1.5 hourse more than Jack to cover the distance, so Time taken by Elain to cover the distance is = 4.5 hours + 1.5 hours = 6 hours

    Average speed of Elain = Distance / time = 360 km / 6 hours

    Average speed of Elain = 60 km/h
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