How many seconds will a train 100 meters long take to cross a bridge 180 meters long if the speed of the train is 36 kmph?	Options:
A) 54 sec
B) 28 sec
C) 25 sec
D) 45 sec
E) 24 sec
D = 100 + 180= 
<gadget id="calculator">100 + 180</gadget>
<output>280</output>
280   S= 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 mps   T= 280/10= 
<gadget id="calculator">280/10</gadget>
<output>28</output>
28 sec   Answer:28 sec
<result>B</result>
How many seconds will a train 100 meters long take to cross a bridge 180 meters long if the speed of the train is 36 kmph?