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 ?
Choose the correct choice from the following answers.
A) 10 am on Thursday  B) 10 am on Friday  C) 10 am on Saturday  D) None of the above  E) Cannot be determined
Explanation :   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= 
<gadget id="calculator">720 / 10</gadget>
<output>72</output>
72 hrs   So they will be 12 hrs apart after 3 days i.e., at 10 am on Thursday.   10 am on Thursdaynswer : 10 am on Thursday
<result>A</result>
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 ?