A train 280 m long, running with a speed of 72 km/hr will pass a tree in? Choose the correct choice
A) 17 sec
B) 16 sec
C) 18 sec
D) 14 sec
E) 12 sec
Speed = 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 m/sec   Time taken= 280 * 1/20= 
<gadget id="calculator">280 * 1/20</gadget>
<output>14</output>
14 sec   Answer: 14 sec
<result>D</result>
A train 280 m long, running with a speed of 72 km/hr will pass a tree in?