How long does a train 100 m long running at the speed of 75 km/hr takes to cross a bridge 135 m length? Choose the correct choice from the following
A) 11.3 sec B) 12.1 sec C) 13.1 sec D) 16.5 sec E) 12.7 sec
Speed = 75 * 5/18   = 20.8 m/sec   Total distance covered   = 100 + 135= 
<gadget id="calculator">100 + 135</gadget>
<output>235</output>
235 m.   Required time= 235/20.8 '   = 11.3 sec.   11.3 secnswer:11.3 sec
<result>A</result>
How long does a train 100 m long running at the speed of 75 km/hr takes to cross a bridge 135 m length?