# | | Question 14

Two trains start from station A and B and travels towards each other at speed of 48km/hr and 72km/hr respectively. At the time of their meeting, the second train has traveled 144 km more than the first. The distance between A and B is:

**(A)** 560 km

**(B)** 680 km

**(C)** 720 km

**(D)** 840 km

**Answer:** **(C)** **Explanation:** The second train has traveled 144 km more than the first train because the speed of second train is 24 km/hr more than first.

Time taken by second train to cover 144 km with surplus 24km/hr = 144/24 = 6 hours.

then, time taken by both train before meeting is 6 hours.

So, their relative speed = 48 + 72 = 120

Total distance travel by both = 120 x 6 = 720 km

Distance between A and B = **720 km**

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