A train 210 m long, running with a speed of 63 km/hr will pass a tree in? Choose the correct choice:	A) 15 sec	B) 16 sec	C) 18 sec	D) 12 sec	E) 25 sec
Speed = 63 * 5/18 = 35/2 m/sec   Time taken = 210 * 2/35= 
<gadget id="calculator">210 * 2/35</gadget>
<output>12</output>
12 sec   ANSWER: 12 sec
<result>D</result>
A train 210 m long, running with a speed of 63 km/hr will pass a tree in?