Excluding stoppages, the speed of a train is 45 kmph and including stoppages it is 35 kmph. Of how many minutes does the train stop per hour? Choose the correct choice:  A) E982  B) 27  C) 12  D) 121  E) 13.3
13.3xplanation:   T = 10/45 * 60 = 13.3   Answer: Option 13.3
<result>E</result>
Excluding stoppages, the speed of a train is 45 kmph and including stoppages it is 35 kmph. Of how many minutes does the train stop per hour?