How many seconds will a train 70 meters long take to cross a bridge 80 meters long if the speed of the train is 36 kmph?  Pick
A) 22 sec  B) 27 sec  C) 25 sec  D) 15 sec  E) 11 sec
Explanation:   15 sec = 70 + 80= 
<gadget id="calculator">70 + 80</gadget>
<output>150</output>
150   S= 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 mps   T= 150/10= 
<gadget id="calculator">150/10</gadget>
<output>15</output>
15 sec   Answer: Option 15 sec
<result>D</result>
How many seconds will a train 70 meters long take to cross a bridge 80 meters long if the speed of the train is 36 kmph?