04:15 Here's the solution: 1. The clock shows 3:45. 2. It's 15 minutes slow, so you need to add 15 minutes to the displayed time. That makes it 04:00 (3:45 + 0:15). 3. The actual time is a quarter past an hour, which means 15 minutes past the hour. So, it's 15 minutes past 4:00, making it 04:15.