A train 300 m long is running at a speed of 99 km/hr. In what time will it pass a bridge 195 m long?
Pick:
A) 17
B) 18
C) 19
D) 20
E) 21
Speed = 99 * 5/18 = 55/2 m/sec   Total distance covered = 300 + 195= 
<gadget id="calculator">300 + 195</gadget>
<output>495</output>
495 m   Required time= 495 * 2/55= 
<gadget id="calculator">495 * 2/55</gadget>
<output>18</output>
18 sec   Answer: 18
<result>B</result>
A train 300 m long is running at a speed of 99 km/hr. In what time will it pass a bridge 195 m long?