Excluding stoppages, the speed of a train is 35 kmph and including stoppages it is 22 kmph. Of how many minutes does the train stop per hour? Choose the correct choice:
A) 82
B) 17
C) 22
D) 82
E) 18

Rationale: "explanation : t = 13 / 35 * 60 = 22 answer : option c"
Answer: C