A train moves pass a police post and a flyover 420 m long in 9 sec – McqOptions

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1.	A train moves pass a police post and a flyover 420 m long in 9 sec and 30 sec respectively. what is the speed of the train ?
A.	72 km/hr
B.	104 km/hr
C.	116 km/hr
D.	136 km/hr
Answer» B. 104 km/hr

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