How long does a train 100 m long running at the speed of 65 km/hr takes to cross a bridge 145 m length?	Options
A) 13.6 sec  B) 12.1 sec  C) 17.9 sec  D) 61.9 sec  E) 47.98 sec
Speed = 65 * 5/18 = 18 m/sec   Total distance covered = 100 + 145= 
<gadget id="calculator">100 + 145</gadget>
<output>245</output>
245 m.   Required time= 245/18 = 13.6 sec.   13.6 secnswer:13.6 sec
<result>A</result>
How long does a train 100 m long running at the speed of 65 km/hr takes to cross a bridge 145 m length?