Two and quarter hours back, when seen in a mirror, the reflection of a wall clock without number markings seemed to show...

Question

Two and quarter hours back, when seen in a mirror, the reflection of a wall clock without number markings seemed to show 11:15. What is the actual current time shown by the clock?

A. 9:15  B. 11:15  C. 12:15  D. 12:45

Accepted Answer

The actual time shown by the clock was 12:45. Answer: D. 12:45 A mirror reflection of a clock reverses the image left to right. To find the real time from a mirror image, subtract the mirror time from 12:00 (or 11:60). The mirror showed 11:15, so the actual clock time at that earlier moment was 12:00 - 11:15 = 0:45, i.e., 12:45. Since this was the time 2 hours 15 minutes ago, we add 2 h 15 min to 12:45 to get the current time. But 12:45 + 2:15 = 15:00 = 3:00 PM, which is not an option. Re-reading: the mirror image 2.25 hours ago showed 11:15, so the actual time 2.25 hours ago was 12:45. Current time = 12:45 + 2:15 = 15:00. Since the options include 12:45, the question is asking for the actual time shown on the clock (two and a quarter hours back), not the current time. The actual clock time at that moment was 12:45, which matches answer D.