How long does a train 150 m long running at the speed of 72 km/hr takes to cross a bridge 132 m length?  Choose the correct choice from the following:
A) 14.1 sec B) 12.1 sec C) 16.1 sec D) 13.1 sec E) 12.15sec
Speed = 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 m/sec   Total distance covered= 150 + 132= 
<gadget id="calculator">150 + 132</gadget>
<output>282</output>
282 m.   Required time= 282/20= 
<gadget id="calculator">282/20</gadget>
<output>141/10 = around 14.1</output>
14.1 sec.   14.1 secnswer:14.1 sec
<result>A</result>
How long does a train 150 m long running at the speed of 72 km/hr takes to cross a bridge 132 m length?