How long does a train 110 meters long running at the speed of 72 km/hour take to cross a bridge 132 meters in length ?  Select the correct option
A) 22.1 seconds B) 12.1 seconds C) 17.1 seconds D) 12.9 seconds E) 11.1 seconds
Speed = 72 km/hour = 72*(5/18) m/sec   = 20 m/sec   Total distance to be covered = 110+132 = 142 meters   Time = Distance/Speed   = 242/20= 
<gadget id="calculator">242/20</gadget>
<output>121/10 = around 12.1</output>
12.1 seconds   Answer: 12.1 seconds
<result>B</result>
How long does a train 110 meters long running at the speed of 72 km/hour take to cross a bridge 132 meters in length ?