GPT-5.3-Codex vs GPT-5.6 Terrafor everyday maths

Sure — let’s do it step by step.

### 1) Work out gallons needed
\[
\text{Gallons used}=\frac{\text{distance}}{\text{mpg}}=\frac{260}{42}=6.190476\ldots \text{ gallons}
\]

### 2) Convert gallons to litres
\[
\text{Litres used}=6.190476\ldots \times 4.546=28.1419\ldots \text{ litres}
\]

### 3) Multiply by price per litre
\[
\text{Cost}=28.1419\ldots \times £1.46 = £41.087\ldots
\]

### 4) Round to nearest 10p
Nearest 10p means nearest £0.10:
\[
£41.087\ldots \approx £41.10
\]

✅ **Fuel cost for 260 miles ≈ £41.10**.

1. **Gallons needed for 260 miles:**

\[
\frac{260}{42}=6.1905\text{ gallons}
\]

2. **Convert gallons to litres:**

\[
6.1905 \times 4.546 = 28.1419\text{ litres}
\]

3. **Calculate fuel cost:**

\[
28.1419 \times £1.46 = £41.0872
\]

4. **Round to the nearest 10p:**

\[
£41.0872 \approx £41.10
\]

**The 260-mile journey costs approximately £41.10 in fuel.**