At 3 o'clock, the minute hand is 15 min. spaces apart from the hour hand.
To be coincident, it must gain 15 min. spaces.
55 min. are gained in 60 min.
| 15 min. are gained in |
❨ |
60 |
x 15 |
❩min |
= |
16 |
4 |
min. |
| 55 |
11 |
| ∴ The hands are coincident at 16 |
4 |
min. past 3. |
| 11 |
