Train A travelling at 55 km/h takes 21 seconds to cross completely tra – McqOptions

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1.	Train A travelling at 55 km/h takes 21 seconds to cross completely train B travelling at 53 km/h in the opposite direction. The length of train A is 2.5 times the length of train B. Train A passes a bridge in 72 seconds. What is the length (in m) of the bridge?
A.	650
B.	600
C.	550
D.	575
Answer» B. 600

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