A train is 460 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 correct answer:
A) 20 seconds
B) 30 seconds
C) 40 seconds
D) 48 seconds
E) None of these
Explanation:   Speed = 45 Km/hr = 45*(5/18) m/sec   = 25/2 m/sec   Total distance = 460+140= 
<gadget id="calculator">460+140</gadget>
<output>600</output>
600 meter   Time= 48 secondsistance/speed   =600∗2/25=48seconds   Option 48 seconds
<result>D</result>
A train is 460 meter long is running at a speed of 45 km/hour. In what time will it pass a bridge of 140 meter length