A clock loses 5 min for every hour and another gains 5 min for every hour. If they are set correct at 10 am on Monday then when will they be 12 hrs apart ?
10 am on Thursday
10 am on Friday
10 am on Saturday
None of the above
For every hour watch A loses 5 min and watch B gains 5 min.
So for every hour they will differ by 10 min.
For 12 hrs (720 min) difference between them the time required = 720 / 10 = 72 hrs
So they will be 12 hrs apart after 3 days i.e., at 10 am on Thursday.
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