If a 240-metre-long metro rail passes a pole in 24 seconds, how long will it take to pass a 650-metre-long platform?
ক
60 seconds
খ
75 seconds
গ
89 seconds
ঘ
130 seconds
সঠিক উত্তর: 89 seconds
Speed of train = length of train/time to cross pole = 240/24 = 10 m/sec