A watch, which gains uniformly, was observed to be 4 minutes, slow at 6 a.m. on a Monday. On the subsequent Thursday at 7 p.m. it was noticed that the watch was 6 minutes fast. When did watch show the correct time?
5 p.m. Tuesday
4 p.m. Tuesday
None of these
3 p.m. Tuesday
6 p.m. Tuesday
At 6 AM on Monday, the time is shown by the clock = 5: 56
At 7 PM on Thursday, the time shown by the clock = 7:06
Difference between the times in hours = 24 + 24 + 24 + 13 => 85 hours
In 85 Hours clock covered 10 Minutes.
To show the correct time it has to cover 4 Minutes,
Time is taken to gain 4 minutes = 4 x 85/10 => 34 Hours
The exact time when the clock will show correct time = Monday 6 AM + 34 Hours => Tuesday 4 PM