A train X travelling at 72 km/h crosses another train Y travelling at 63 km/h (in opposite direction) in 18 seconds. If the length of train Y is two-third the length of X, the length of train X is:

A train X travelling at 72 km/h crosses another train Y travelling at

1.	A train X travelling at 72 km/h crosses another train Y travelling at 63 km/h (in opposite direction) in 18 seconds. If the length of train Y is two-third the length of X, the length of train X is:
A.	420 m
B.	300 m
C.	405 m
D.	270 m
Answer» D. 270 m

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A train X travelling at 72 km/h crosses another train Y travelling at 63 km/h (in opposite direction) in 18 seconds. If the length of train Y is two-third the length of X, the length of train X is:

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