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Home Aptitude Time and Distance See What Others Are Saying!
  • Question
  • A and B runs around a circular track. A beats B by one round or 10 minutes. In this race, they had completed 4 rounds. If the race was only of one round, find the A's time over the course:


  • Options
  • A. 8 min
  • B. 7.5 min
  • C. 12.5 min
  • D. 12 min

  • Correct Answer
  • 7.5 min 

    Explanation

    B runs around the track in 10 min.

     i.e ,    Speed of B = 10 min per round

     Therefore,  A beats B by 1 round

      Time taken  by A to complete 4 rounds 

      = Time taken by B to complete 3 rounds  

     = 30 min 

     

    Therefore, A's speed = 30/4 min per round = 7.5 min per round

     Hence, if the race is only of one round A's time over the course = 7 min 30 sec

  • Tags: AIEEE, Bank Exams, CAT, Bank Clerk, Bank PO

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