Without stoppages, a train travels certain distance with an average speed of 300 km/h, and with stoppages, it covers the same distance with an average speed of 200 km/h. How many minutes per hour the train stops ?	Choose the correct answer.
A) 20 B) 21 C) 22 D) 23 E) 24
Due to stoppages, it covers 100 km less .   Time taken to cover 100 km = 100â„300h = 1â„3h   = 1â„3 Ã— 60 min = 20 min   20nswer 20
<result>A</result>
Without stoppages, a train travels certain distance with an average speed of 300 km/h, and with stoppages, it covers the same distance with an average speed of 200 km/h. How many minutes per hour the train stops ?