A train is going in the north direction at a speed of 18 m s from a point while another train is goi...........

Quantitative Aptitude(IBPS RRB CL) Problems on trains

A train is going in the north direction at a speed of 18 m/s from a point while another train is going in the south direction at a speed of 12 m/s from the same point at the same time. In how much time the distance between both the trains be 367.2 km?

2.4 hours

2.8 hours

3.4 hours

3.6 hours

None of these

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Explanation:

Since, both the train starts from same point and going in exact opposite direction. So, the relative speed of train = (18 + 12) = 30 m/s
the time taken by which both train separated by 367.2 km = 367200 / 30 = 12240 sec i.e. 3.4 hours