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Home Aptitude Time and Distance See What Others Are Saying!
  • Question
  • Ramu rides his bike at an average speed of 45 km/hr and reaches his desitination in four hours. Somu covers the same distance in six hours. If Ramu covered his journey at an average speed which was 9 km/hr less and Somu covered his journey at an average speed which was 10 km/hr more, then the difference in their times taken to reach the destination would be (in minutes).


  • Options
  • A. 18 min
  • B. 30 min
  • C. 27 min
  • D. 32 min

  • Correct Answer
  • 30 min 

    Explanation

    Distance travelled by Ramu = 45 x 4 = 180 km

    Somu travelled the same distance in 6 hours.

    His speed = 180/6 = 30 km/hr

    Hence in the conditional case, Ramu's speed = 45 - 9 = 36 km/hr and Somu's speed = 30 + 10 = 40km/hr.

    Therefore travel time of Ramu and Somu would be 5 hours and 4.5 hours respectively.

    Hence difference in the time taken = 0.5 hours = 30 minutes.

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

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