It appears there may be some confusion or discrepancy in the information provided. The passage states that: 1. The clock shows 3:45 2. It's 15 minutes slow 3. The actual time is a quarter past an hour The clock time of 3:45 is 15 minutes slow, so let's adjust for that: 3:45 - 0:15 = 3:30 Now, if we consider "a quarter past an hour", that would be 0:15 past the hour. 3:30 + 0:15 = 3:45 The discrepancy arises because 3:45 (clock time) and 3:45 (adjusted time) are the same. In the context of a quarter past the hour, 3:45 would be correct for a full 24-hour clock.