Two express trains 200 meters and 150 meters long are moving in the same direction at 72 km/h and 54 km/h respectively. Find the time taken by the faster train to cross the slower train completely. MCQ with Answer and Explanation

Two express trains 200 meters and 150 meters long are moving in the same direction at 72 km/h and 54 km/h respectively. Find the time taken by the faster train to cross the slower train completely.
A. 80 seconds
B. 60 seconds
C. 70 seconds
D. 90 seconds
Answer: Option C
Solution (By JKSSB Mock Tests)
Total distance = 200 + 150 = 350 meters. Relative speed in same direction = 72 - 54 = 18 km/h = 5 m/s. Time taken = 350 / 5 = 70 seconds.

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Practice More Time Speed and Distance Questions

Question #1
Two trains 140 meters and 160 meters long are tracking on parallel routes in opposite directions at 40 km/h and 50 km/h respectively. How long do they take to clear each other?
A. 15 seconds
B. 12 seconds
C. 10 seconds
D. 14 seconds

Correct Answer: Option B


Explanation:
Total distance = 140 + 160 = 300 meters. Relative speed = 40 + 50 = 90 km/h = 90 * (5/18) = 25 m/s. Time taken = 300 / 25 = 12 seconds.

This question belongs to: Maths Time Speed and Distance
Question #2
A train 180 meters long is running at a speed of 90 km/h. How long will it take to pass a post?
A. 9 seconds
B. 8 seconds
C. 6 seconds
D. 7.2 seconds

Correct Answer: Option D


Explanation:
Speed = 90 * (5/18) = 25 m/s. Time to pass a post = 180 / 25 = 7.2 seconds.

This question belongs to: Maths Time Speed and Distance
Question #3
A train running at 54 km/h passes an active signal pole in 12 seconds. Find the length of the train.
A. 220 meters
B. 160 meters
C. 200 meters
D. 180 meters

Correct Answer: Option D


Explanation:
Speed = 54 * (5/18) = 15 m/s. Length of train = Speed * Time = 15 * 12 = 180 meters.

This question belongs to: Maths Time Speed and Distance