A clock shows 12:35. What time does its mirror image show, the mirror being placed vertically beside the clock?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 11:25
A vertical mirror turns the clock face left to right, so the real time and the mirror time add up to 12 hours: the mirror time is 11:60 minus the time. A time between 12:00 and 1:00 is first read as 0 hours and some minutes.
12:35 is 0 h 35 min past 12
Mirror time \(=\) 11 h 60 min − 0 h 35 min
Minutes: \(60-35=25\); hours: \(11-0=11\)
So the mirror image shows 11:25
