1. Two towns are connected by railway. Can you find the distance between them? I. The speed of the mail train is 12 km/hr more than that of an express train. II. A mail train takes 40 minutes less than an express train to cover the distance.
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By: guest on 01 Jun 2017 05.49 pm
Let the distance between the two stations be x km. I. Then, speed of the mail train = (y + 12) km/hr. II. x - x = 40 . y (y + 12) 60 Thus, even I and II together do not give x. Correct answer is (D).