How long does a train 110 m long traveling at 72 kmph takes to cross a bridge of 170 m in length?  Choose the correct answer:
A) 16.5  B) 16.0  C) 16.4  D) 14  E) 16.1
14 = 110 + 170= 
<gadget id="calculator">110 + 170</gadget>
<output>280</output>
280 m   S= 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20   T= 280 * 1/20= 
<gadget id="calculator">280 * 1/20</gadget>
<output>14</output>
14 sec   Answer: 14
<result>D</result>
How long does a train 110 m long traveling at 72 kmph takes to cross a bridge of 170 m in length?