The dashed frame shows a clock as seen in a mirror. What will the mirror image show 2 hours 45 minutes later?

The image shows 8:35, so the real time is 11:60 - 8:35 = 3:25. In 2 h 45 min the clock shows 6:10, whose mirror image is 11:60 - 6:10 = 5:50. A mirror clock runs backwards: 8:35 - 2:45 = 5:50. (11:20 adds the time to the image; 6:10 is the real time.)