It takes15 seconds for a 375-m long train to pass a pole. How long will it take to pass a 975-m long platform?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e 54 seconds.
Speed = Distance ÷ Time = 375 ÷ 15 = 25 m/s
Total distance to pass the platform = Train length + Platform length = 375 + 975 = 1350 m
Time to pass the platform = Distance ÷ Speed = 1350 ÷ 25 = 54 seconds