Excluding stoppages, the speed of a train is 45 kmph and including stoppages it is 32 kmph. Of how many minutes does the train stop per hour?  Choose the correct answer.
A) 17 B) 83 C) 12 D) 83 E) 28
Explanation:   T = 13/45 * 60 = 17   17nswer: Option 17
<result>A</result>
Excluding stoppages, the speed of a train is 45 kmph and including stoppages it is 32 kmph. Of how many minutes does the train stop per hour?