Claude Opus 4.6 vs GPT-5.6 Solfor everyday maths

# Working Hours in a UK Full-Time Year

## My Estimate: **~1,750 hours**

## Key Assumptions

| # | Assumption | Value used |
|---|-----------|------------|
| 1 | Standard full-time working week | 37.5 hours |
| 2 | Weeks in a year | 52 |
| 3 | Paid time off (bank holidays + annual leave) | 5.6 weeks (28 days — the UK statutory minimum) |

## Calculation

Actual working weeks = 52 − 5.6 ≈ **46.4 weeks**

Hours = 46.4 × 37.5 ≈ **1,740 hours**

Rounding sensibly: **~1,750 hours**

(This aligns well with OECD estimates for average annual hours act…

**Rough estimate: about 1,740 working hours per year.**

Assumptions:

1. **37.5 paid working hours per week** (7.5 hours × 5 days).
2. **52 weeks per year.**
3. **28 days of paid leave**, including UK bank holidays—equivalent to 5.6 weeks.

Calculation:

\[
(52 - 5.6) \times 37.5 \approx 1,740 \text{ hours}
\]

The assumption that moves the answer most is **weekly contracted hours**. A 40-hour week under the same leave assumption gives about **1,856 hours**, whereas changing annual leave by one week changes the result by only **37.5 hours**.