How many seconds will a train 100 meters long take to cross a bridge 150 meters long if the speed of the train is 72 kmph?	Pick.
A) 22 sec B) 77 sec C) 25 sec D) 18 sec E) 12.5 sec
D = 100 + 150= 
<gadget id="calculator">100 + 150</gadget>
<output>250</output>
250   S= 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 mps   T= 250/20= 
<gadget id="calculator">250/20</gadget>
<output>25/2 = around 12.5</output>
12.5 sec   Answer:12.5 sec
<result>E</result>
How many seconds will a train 100 meters long take to cross a bridge 150 meters long if the speed of the train is 72 kmph?