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Q.
Two trains are moving in the same direction at 72 kmph and 36 kmph. The faster train crosses a girl sitting at window seat in the slower train in 32 seconds. Find the length of the faster train ?
A.
170 m
B.
100 m
C.
270 m
D.
320 m
View Answer
Correct choice: D
Explanation:
Relative speed = (72 - 36) x 5/18 = 2 x 5 = 10 mps. Distance covered in 32 sec = 32 x 10 = 320 m. The length of the faster train = 320 m.
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