Excluding stoppages, the speed of a train is 48 kmph and including stoppages it is 40 kmph. Of how many minutes does the train stop per hour? Options:
A) 16
B) 17
C) 15
D) 10
E) 12
T = 8/48 * 60= 
<gadget id="calculator">8/48 * 60</gadget>
<output>10</output>
10   Answer: 10
<result>D</result>
Excluding stoppages, the speed of a train is 48 kmph and including stoppages it is 40 kmph. Of how many minutes does the train stop per hour?