Two rains 100 metres and 120 mettres long are running in the same d – McqOptions

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1.	Two rains 100 metres and 120 mettres long are running in the same direction with speed of 72 km/hr and 54 km/hr . In how much time will the first train cross the second ?
A.	42 sec
B.	43 sec.
C.	44 sec
D.	45 sec
Answer» D. 45 sec

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