Time & Distance Mcqs

Q.  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 :__________?

a. 10 min
b. 11 min 20 sec
c. 13 min
d. 13 min 20 sec


ANSWER: See Answer
 
Speed = (10 X 60/12 ) km/hr = 50 km/hr. New speed = (50 – 5) km / hr = 45 km /hr. So Time taken = ( 10/45 ) hr = ( 2/9X 60 )min 131/3 min = 13 min 20 sec.
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