A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length.  Choose the most appropriate option:
A) 20 seconds
B) 27 seconds
C) 30 seconds
D) 40 seconds
E) 50 seconds
Speed = 45 Km/hr = 45*(5/18) m/sec   = 25/2 m/sec   Total distance = 360+140= 
<gadget id="calculator">360+140</gadget>
<output>500</output>
500 meter   Time= 40 secondsistance/speed   =500∗2/25=40seconds   answer :40 seconds
<result>D</result>
A train is 360 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length.