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Thread: puzzle on speed and distance.

  1. #1
    Expert Member
    Join Date
    Jun 2006
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    410

    puzzle on speed and distance.

    If Lokesh valks to school and rides his bicycle back home it takes him 90 minutes. If he rides his bicycle both ways it takes him 30 minutes. How many hours would it take him to make the trip to school and back by walking?


  2. #2
    Contributing Member
    Join Date
    Oct 2006
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    67

    Re: puzzle on speed and distance.

    2 hours 30 minutes.


  3. #3
    Expert Member
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    Jun 2006
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    410

    Re: puzzle on speed and distance.

    Exactly correct answer. It will be very useful to others if you could publish the solution.


  4. #4
    Contributing Member
    Join Date
    Oct 2006
    Answers
    67

    Re: puzzle on speed and distance.

    From the 2nd line: For 2 way in bicycle, it takes 30 minutes. So for 1 way it will take 15 minutes.
    From the 1st line: By walk + By bicyle = 90 minutes; By walk = 75 minutes.
    Solution: 2 way by walk = 150 minutes which is 2 hours 30 minutes.


  5. #5
    Junior Member
    Join Date
    Jul 2008
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    11

    Re: puzzle on speed and distance.

    2 hours and 30 minutes


  6. #6
    Junior Member
    Join Date
    Oct 2008
    Answers
    9

    Re: puzzle on speed and distance.

    Walk + Ride = 90 minutes
    Ride + Ride = 30 minutes
    Ride = 15 minutes
    Walk + 15 = 90 minutes
    Walk = 75 minutes
    Walk + Walk = 150 minutes
    Walk + Walk = 2 hours and 30 minutes


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