A train travelling at a speed of 60 km/hr crosses a platform in 20 seconds. The same train crosses a person who is walking at a speed of 6 km/hr in the same direction as that of the train in 12 seconds. What is the length of the train and that of the plat

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Q: 68 (CAPF/2024)
A train travelling at a speed of 60 km/hr crosses a platform in 20 seconds. The same train crosses a person who is walking at a speed of 6 km/hr in the same direction as that of the train in 12 seconds. What is the length of the train and that of the platform, respectively?

question_subject: 

General Knowledge

question_exam: 

CAPF

Relative speed of train to person = (60-6) km/hr = 54, equates to 54×5/18 = 15 m/s. Train crosses 15×12 = 180 m length. Train pass platform 180 m in 20 seconds, platform length is (60×5/18 = 16.67 m/s). Platform length = speed × time - train length, ~153.33 m.