# QA – Placement Quizzes | Time Speed Distance | Question 6

Rajdhani Express halts for 3 minutes every time it covers a distance of 75 km. If the train runs at a speed of 100 km/h and the destination is 600 km away from the source, find out the time taken to reach the destination station from the source station.**(A)** 6 h 23 min**(B)** 6 h 22 min**(C)** 6 h 21 min**(D)** 6 h 24 min**Answer:** **(C)****Explanation:** Since the train runs at a speed of 100 km/h, the time taken to cover 600 km = 600/100 = 6 h.

Number of times the train halts = 600/75 – 1 = 7.

Since the train halts for 3 minutes at each stop, the time spent waiting = 7 * 3 = 21 min.

Therefore, total time taken = 6 h 21 min.

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