Paper 1 · Mathematical Reasoning and Aptitude
A train 320 m long is running at a speed of 36 kmph. How much time will it take to pass a pole?
A30 seconds
B32 seconds ✓ Correct
C36 seconds
D40 seconds
Correct answer: (B) 32 seconds — It will take 32 seconds, so that is the answer.
Explanation
★It will take 32 seconds, so that is the answer.
★To pass a pole the train must cover its own length of 320 m.
★A speed of 36 kmph is 36 times 1000 over 3600, which is 10 metres per second.
★Time is distance divided by speed, that is 320 divided by 10.
★That equals 32.
★So it will take 32 seconds to pass the pole.
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