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Q.
The length of a brigade which a train 130 m long and traveling at 45kmph can cross in 30 seconds, is
A.
196 mts
B.
220 mts
C.
230 mts
D.
245 mts
View Answer
Correct choice: D
Explanation:
Let the length of the brigade is x mts Then Distance = 130 + x mts given speed = 45 kmph = 45 x5/18 m/s Time = 30 sec T = D/S => 30 = 130+x/(45x5/18) => x = 245 mts.
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