How many seconds will a train 100 meters long take to cross a bridge 170 meters long if the speed of the train is 36 kmph?  Choose the correct choice from the following.
A) 54 sec
B) 65 sec
C) 25 sec
D) 45 sec
E) 27 sec
D = 100 + 170= 
<gadget id="calculator">100 + 170</gadget>
<output>270</output>
270   S= 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 mps   T= 270/10= 
<gadget id="calculator">270/10</gadget>
<output>27</output>
27 sec   Answer:27 sec
<result>E</result>
How many seconds will a train 100 meters long take to cross a bridge 170 meters long if the speed of the train is 36 kmph?