Without stoppages, a train travels certain distance with an average speed of 400 km/h, and with stoppages, it covers the same distance with an average speed of 360 km/h. How many minutes per hour the train stops ? Choose the correct choice from the following options.
A) 3	B) 4	C) 5	D) 6	E) 7
Due to stoppages, it covers 40 km less .   Time taken to cover 40 km = 40â„400h = 1â„10h   = 1â„10 Ã— 60 min = 6 min   Answer 6
<result>D</result>
Without stoppages, a train travels certain distance with an average speed of 400 km/h, and with stoppages, it covers the same distance with an average speed of 360 km/h. How many minutes per hour the train stops ?