| Time from 7 a.m. to 4.15 p.m. = 9 hrs 15 min. = |
37 |
hrs. |
| 4 |
3 min. 5 sec. of this clock = 3 min. of the correct clock.
| ⟹ |
37 |
hrs of this clock = |
1 |
hrs of the correct clock. |
| 720 |
20 |
| ⟹ |
37 |
hrs of this clock = |
❨ |
1 |
x |
720 |
x |
37 |
❩ |
hrs of the correct clock. |
| 4 |
20 |
37 |
4 |
= 9 hrs of the correct clock.
∴ The correct time is 9 hrs after 7 a.m. i.e., 4 p.m.
