Results 1 to 4 of 4

Thread: find the elapsed time.....

  1. #1
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    find the elapsed time.....

    In an Clock first observation, hour hand is exactly at the minute mark, and the minute hand is 6mins. ahead of it. Later, the clock is observed again. Now the hout hand is exactly on a different minute mark, and the minute hand is 7 mins. ahead of it. How much the time elapsed between the two observations?

    -------------------------
    suresh


  2. #2
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: find the elapsed time.....

    At first observation time was 1:12 and at second observation time was 3:24
    Hence answer is 2hrs 12 mins i.e. 132 mins

    [B][COLOR="Blue"]Anyone who thinks he knows all the answers, must not be up-to-date on the questions[/COLOR][/B]
    [B]Anshul[/B]:)

  3. #3
    Contributing Member
    Join Date
    Sep 2006
    Answers
    962

    Re: find the elapsed time.....

    smartcoder please post your solution here...It will helpful to others.

    -------------------
    suresh


  4. #4
    Expert Member
    Join Date
    Jan 2007
    Answers
    272

    Re: find the elapsed time.....

    Solution:
    hour hand goes from one minute mark to next minute mark in every 12 minutes.
    So the hour hand would be at a minute mark at following times:
    xx:00
    xx:12
    xx:24
    xx:36
    xx:48

    Now we have to replace values of xx from 01-12 and check for result

    if we replace xx with 01 and see time 01:12 then
    hour hand will be at 6 minute mark and minute hand will be at 12 minute mark
    hence minute hand is 6 minutes ahead of hour hand.

    if we replace xx with 03 and see time 03:24 then
    hour hand will be at 17 minute mark and minute hand will be at 24 minute mark
    hence minute hand is 7 minutes ahead of hour hand.

    Hence the two times are 01:12 and 03:24 and the difference is 2hrs and 12 minutes.

    [B][COLOR="Blue"]Anyone who thinks he knows all the answers, must not be up-to-date on the questions[/COLOR][/B]
    [B]Anshul[/B]:)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Applying for a job can be a stressful and frustrating experience, especially for someone who has never done it before. Considering that you are competing for the position with a at least a dozen other applicants, it is imperative that you thoroughly prepare for the job interview, in order to stand a good chance of getting hired. That's where GeekInterview can help.
Interact