3:45 The clock shows 3:45. It's 15 minutes slow. The actual time is a quarter past an hour. To find the actual time, we need to add the clock's 15 minute discrepancy to the time shown: 3:45 (time shown) +15 min (clock is 15 min slow) ---------- 4:00 (actual time, quarter past the hour) Therefore, the correct time, accounting for the faulty clock being 15 minutes behind, is 4:00 or a quarter past the hour in 24 hour time notation.