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From a point on circular track 15 km long P, Q and R started running in the same direction at the same time with

From a point on circular track 15 km long P, Q and R started running in the same direction at the same time with speed of 7; km per hour, 3 km per hour, 6 km per hour respectively. At what time they will meet again on the starting point 1. 45 hours 2. 9 hours 3. 15 hours 4. 23 hours 5. None of these

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Solution The correct answer is option 5 None of these Explanation Distance 15 km Speed of A 7712 k... blur-text-image

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