A train travelling with uniform speed crosses two bridges of lengths 300 m and 240 m in 21seconds and 18 seconds respectively. The speed of the train is :

A train travelling with uniform speed crosses two bridges of lengths 3

1.	A train travelling with uniform speed crosses two bridges of lengths 300 m and 240 m in 21seconds and 18 seconds respectively. The speed of the train is :
A.	72 km/hr
B.	68 km/hr
C.	65 km/hr
D.	60 km/hr
Answer» B. 68 km/hr

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A train travelling with uniform speed crosses two bridges of lengths 300 m and 240 m in 21seconds and 18 seconds respectively. The speed of the train is :

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