04:15 Here's the reasoning: 1. The clock shows 3:45, but it's 15 minutes slow. So, you need to add 15 minutes to the displayed time. 2. Adding 15 minutes to 3:45 gives you 4:00 (3 hours + 1 hour = 4 hours, and 45 minutes + 15 minutes = 60 minutes, which is 1 hour). 3. The text then says the actual time is a quarter past an hour. Since you've already adjusted the time to 4:00, a quarter past the hour would be 4:15 (15 minutes past the hour).