Without stoppages, a train travels certain distance with an average speed of 80 km/h, and with stoppages, it covers the same distance with an average speed of 60 km/h. How many minutes per hour the train stops ?	Select:  A) 15  B) 18  C) 10  D) 16  E) None of these
Due to stoppages, it covers 20 km less .   Time taken to cover 20 km = 20⁄80h = 1⁄4h   = 1⁄4 × 60 min = 15 min   15nswer 15
<result>A</result>
Without stoppages, a train travels certain distance with an average speed of 80 km/h, and with stoppages, it covers the same distance with an average speed of 60 km/h. How many minutes per hour the train stops ?