Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is
45 kmph. For how many minutes does the bus stop per hour?  Choose the correct choice from the following choices:
A) 12	B) 11	C) 10	D) 9	E) 20
SPEED OF THE BUS EX10LUDING STOPPAGES = 54 KMPH   SPEED OF THE BUS IN10LUDING STOPPAGES = 45 KMPH   LOSS IN SPEED IN10LUDING STOPPAGES = 54-45= 
<gadget id="calculator">54-45</gadget>
<output>9</output>
9 KMPH   IN HOUR BUS 10OVERS 9 KM LESS DUE TO STOPPAGES   HEN10E DISTAN10E/SPEED= 9/54 = 1/6 HR = 60/6= 
<gadget id="calculator">60/6</gadget>
<output>10</output>
10 MIN   ANSWER 10
<result>C</result>
Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is
45 kmph. For how many minutes does the bus stop per hour?