P and Q started moving simultaneously from points X and Y respectively on a circular track in the same direction. XY = 2 km and the length of the track is 6 km. The initial position of P was behind that of Q. P caught up with Q for the second time in 40 minutes. Had P started in the opposite direction, they would have met for the first time in 12 minutes. Find the speed of P (in km/hr).
(A) 16 (B) 14 (C) 6 (D) 4
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a 16
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