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A and B are running continuously around a circular track with respective uniform speed. They start running from the same point at the same time. After how much time will they meet at the diametrically opposite point of their starting point?
(a) Speed of A is 20 m/s and speed of B is 35 m/s.
(b) Length of the track is 1000 m.
(c) Both A and B are running in the same direction.