A train of length L meter crossed a platform of length 1.5 L meter in 20 seconds. If the speed of train is 72km/h, then in how much time the train will cross a person standing on that platform?

Question

PYQPulse · Accepted Answer

8 seconds

PYQPulse · Answer

Explanation: Speed of train = 72 km/h = 72 × 5/18 = 20 km/h According to question, => (L + 1.5L)/20 = 20 ⇒ L = 400/2.5 = 160 Time required by train = 160/20 = 8 seconds IBPS RRB Scale I 2021 Prelims Memory Based Paper

A train of length L meter crossed a platform of length 1.5 L meter in 20 seconds. If the speed of train is 72km/h, then in how much time the train will cross a person standing on that platform?

Answer: B. 8 seconds

Explanation