Two trains 140 m and 160 m long run at the speed of 60 km/hr and 40 km/hr, respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other is?
A.9 s
B.9.6 s
C.10 s
D.10.8 s
Correct Answer:
D. 10.8 s
Explanation:
Required time =DistanceSpeed=300(2509)=(300×9250)sec=545sec=10.8sec
