A train 360 m long is running at a speed of 42 km/hr. In what time will it pass a bridge 140 m long? Choose the correct choice:  A) 40 sec  B) 29 sec  C) 26 sec  D) 27 sec  E) 43 sec
Speed = 42 * 5/18 = 35/3 m/sec   Total distance covered = 360 + 140= 
<gadget id="calculator">360 + 140</gadget>
<output>500</output>
500 m   Required time= 500 * 3/35   = 43 sec   Answer:43 sec
<result>E</result>
A train 360 m long is running at a speed of 42 km/hr. In what time will it pass a bridge 140 m long?