Find the distance for each part, then add.<br><br>
&bull; Part 1: 12 × \( \frac{15}{60} \) = 12 × 0.25 = 3 km<br>
&bull; Part 2: 10 × \( \frac{12}{60} \) = 10 × 0.2 = 2 km<br>
&bull; Total distance = 3 + 2 = 5 km<br><br>
Final Answer: 5 km