A) 300m
B) 400m
C) 500m
D) 600m
Correct Answer: B
Solution :
Reasoning: Length of the train = distance covered in 40 seconds at the rate of 3 6 km per hour. \[Loss%=\frac{Loss\times 100}{C.P.}\] Required length \[S.P.=\frac{100+gain%}{100}\times C.P.\] i.e., 400 meters.
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