Excluding stoppages,the speed of the bus is 54kmph and
including stoppages,it is 45kmph.for how many min does the bus
stop per hr	Pick
A) 12 min
B) 11 min
C) 13 min
D) 19 min
E) 17 min
Due to stoppages,it covers 9km less.   time taken to cover 9 km is [  9/54 *60= 
<gadget id="calculator">  9/54 *60</gadget>
<output>10</output>
10min   Answer is 17 min.
<result>E</result>
Excluding stoppages,the speed of the bus is 54kmph and
including stoppages,it is 45kmph.for how many min does the bus
stop per hr