04:15 Here's the reasoning: 1. First, we find out the correct time according to the clock by adding 15 minutes (since it's slow) to 3:45, which gives us 4:00. 2. Now, we know that the actual time is a quarter past an hour. Since our corrected clock time was 4:00, the actual time should be 15 minutes past 4:00, which results in 04:15.