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Q:

P, Q and R start at the same time in the same direction to run around a circular stadium. P completes a round in 252 seconds, Q in 308 seconds and R in 198 seconds, all starting at the same point. After what time will they next meet at the starting point again? 

  • 1
    42 minutes 36 seconds
  • 2
    26 minutes 18 seconds
  • 3
    46 minutes 12 seconds
  • 4
    45 minutes
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Answer : 3. "46 minutes 12 seconds "

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