A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr, the time taken by it to cover the same distance will be?
Choose one:
A) 13min 20sec
B) 10min
C) 11min 30sec
D) 12min 15sec
E) 15min 15sec
Speed = 10*60/12= 
<gadget id="calculator">10*60/12</gadget>
<output>50</output>
50 km/hr   new speed= 50-5= 
<gadget id="calculator">50-5</gadget>
<output>45</output>
45 km/hr   time taken= 10/45 = 60*2/9 = 13 min 20 sec   13min 20secnswer is 13min 20sec
<result>A</result>
A train covers a distance of 10 km in 12 minutes. If its speed is decreased by 5 km/hr, the time taken by it to cover the same distance will be?