A train 460 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long? Answers:  A) 40  B) 87  C) 48  D) 21  E) 14
Speed = 45 * 5/18 = 25/2 m/sec   Total distance covered = 460 + 140= 
<gadget id="calculator">460 + 140</gadget>
<output>600</output>
600 m   Required time= 600 * 2/25= 
<gadget id="calculator">600 * 2/25</gadget>
<output>48</output>
48 sec   Answer:48
<result>C</result>
A train 460 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?