Student: A train 250 m long, running with a speed of 50 km/hr will pass a tree in?\nOptions:\n(A) 18sec\n(B) 20sec\n(C) 25sec\n(D) 30sec\n(E) 1min.
Another student: Let's say, hmmm...

User
Speed = 50 * 5/18 = 125/9 m/sec\nTime taken = 250 *9/125 = 18 sec Final answer: (A).
Assistant