A train 250 m long, running with a speed of 50 km/hr will pass a tree in?  Options:	A) 18sec	B) 20sec	C) 25sec	D) 30sec	E) 1min
Speed = 50 * 5/18 = 125/9 m/sec   Time taken = 250 *9/125= 
<gadget id="calculator">250 *9/125</gadget>
<output>18</output>
18 sec   18secnswer:18sec
<result>A</result>
A train 250 m long, running with a speed of 50 km/hr will pass a tree in?