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TNPSC Group 2 · 2013 Preliminary Examination

197.  A, B, C start at the same time in the same direction to run around a rectangular garden. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds starting at the same point. After what time will they meet again at the starting point?

Answer: C.   46 minutes 12 seconds
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