How long does a train 110 m long running at the speed of 72 km/hr takes to cross a bridge 112 m length? Pick one:
A) 82.1 sec	B) 12.1 sec	C) 16.1 sec	D) 11.1 sec	E) 12.15sec
Speed = 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 m/sec   Total distance covered= 110 + 112= 
<gadget id="calculator">110 + 112</gadget>
<output>222</output>
222 m.   Required time= 222/20= 
<gadget id="calculator">222/20</gadget>
<output>111/10 = around 11.1</output>
11.1 sec.   Answer:11.1 sec
<result>D</result>
How long does a train 110 m long running at the speed of 72 km/hr takes to cross a bridge 112 m length?