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  1. A train 240 m long passes a bridge 120 m long in 24 sec. Find the speed with which the train in moving ?
    1. 45 km/hr.
    2. 54 km/hr.
    3. 36 km/hr.
    4. 42 km/hr.
Correct Option: B

Required speed = (240 + 120) / 24 = 15 m/sec
= 15 x (18/5) km/hr = 54 km/hr


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