Hard
A clock showing only the marks 3, 6, 9 and 12 is placed upside down in front of a mirror. A person sees a stopped time of 9:50 in the mirror image. What is the actual time?
Explanation
Explanation
When the clock is placed upside down and viewed in a mirror, there is a double transformation. According to the given answer key, if 9:50 is seen in the mirror, the actual time is 8:40.
PRO TIP
Re-check your working by substituting the answer back into the original question.