A train 260 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long? Choose the correct option:
A) 40 sec
B) 50 sec
C) 32 sec
D) 49 sec
E) 60 sec
Speed = 45 * 5/18 = 25/2 m/sec   Total distance covered = 260 + 140= 
<gadget id="calculator">260 + 140</gadget>
<output>400</output>
400 m   Required time= 400 * 2/25= 
<gadget id="calculator">400 * 2/25</gadget>
<output>32</output>
32 sec   Answer:32 sec
<result>C</result>
A train 260 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?