Question

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. Thursday 6:00 a.m.
• B. Thursday 6:00 p.m.
• C. Thursday 6:30 p.m.
• D. Thursday 5:00 a.m.
• E. None of these

Answer 1

The correct option is B Thursday 6:00 p.m.

Since the watch was 5 minutes fast on Wednesday evening, 5:00 p.m. and was 5 minutes slow after two days at 7:00 p.m., the correct time would be at the mid point of these 2 times.
Time difference=(24+24+2)50 hours,
So the right time will be 25 hours past 5 p.m. Wednesday,
I.e, 6 p.m. on Tuesday.