Excluding stoppages, the speed of a train is 108 km/h and including stoppages, it is 90 km/h. For how many minutes does the train stop per hour?

A) 5

B) 9

C) 10

D) 6

Correct answer:
C) 10

Description for Correct answer:
Because of stoppages, train 18 km less per hour.

Therefore, Time taken to cover 18 km

= \( \Large \frac{18}{108} = \frac{1}{6} h =\frac{1}{6} \times 60 \) = 10 min.


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