​A watch showed five past five on Wednesday evening when the correct time was 5:00 p.m. It loses uniformly, and was 5 minutes slow after two days at 7:00 p.m. When did the watch show the correct time ?​

​A watch showed five past five on Wednesday evening when the correct time was 5:00 p.m.

It loses uniformly, and was 5 minutes slow after two days at 7:00 p.m.

From 5:00 p.m. Wednesday to 5:00 p.m. Friday is 2 days (48 hours).
From 5:00 p.m. Friday to 7:00 p.m. Friday is an additional 2 hours.

The total time difference between Wednesday 5: 00 pm to Friday 7:00 pm =  24 + 24 + 2 = 50 hrs.

= $$\frac{50}{2} = 25$$ hr

Hence the right time will be 25 hours past 5:00 pm Wednesday.

Wednesday 5:00 p.m. + 24 hours = Thursday 5:00 p.m.
Plus 1 hour = Thursday 6:00 p.m.

So, the watch showed the correct time at 6:00 p.m. on Thursday.

Thus, the correct answer is (b).