Question

A train leaves at 17.22 and arrives at its destination at 18.14.

If the train travelled 56 km, what was it's average speed in km/h?
Give your answer rounded to 1 dp.

Answer 1

64.6 km/h

Explanation:

18:14 = 18h 14'

1h = 60'

18h = 17h + 60'

18h14' = 17h + 60' ´14' = 17h 74'

then:

17h 74'

-17h 22'

= 0h 52'

the train travelled 56km at 52 minutes

56km/52minutes

1 hour = 60 minutes

52 minutes = 52/60 = 0.86667 hours

then:

56km/52minutes = 56km/0.86667hours

= 64.615 km/hours