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Math and Puzzles Challenge - 35

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Multiple Choice

In a circular track of 100 kms run A and B.A's speed is 25km/hr and B's is 15km/hr.In hw much time will they cross each other for the 3rd time?

  1. 25 hrs
  2. 20 hrs
  3. 25.71 hrs(approx)
  4. 40 hrs
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