How long does a train 100 m long travelling at 60 kmph takes to cross a bridge of 80 m in length? Choose the correct choice from the following answers:
A) 15.8 sec B) 14.9 sec C) 12.4 sec D) 10.8 sec E) 11.8 sec
10.8 sec   16.8 sec   10.8 sec = 100 + 80= 
<gadget id="calculator">100 + 80</gadget>
<output>180</output>
180 m   S= 60 * 5/18 = 50/3   T = 180 * 3/50= 
<gadget id="calculator">180 * 3/50</gadget>
<output>54/5 = around 10.8</output>
10.8 sec
<result>D</result>
How long does a train 100 m long travelling at 60 kmph takes to cross a bridge of 80 m in length?