prunaai/llada2.1-flash 🔢📝 → 📝

To find the average speed for the entire trip, we use the formula:

$$
ext{Average Speed} = \frac{ ext{Total Distance}}{ ext{Total Time}}
$$

Step 1: Find the total distance traveled

The train travels:

• 120 km in the first part
• 180 km in the second part

So, total distance is:

$$
120, ext{km} + 180, ext{km} = 300, ext{km}
$$

Step 2: Find the total time taken

The train takes:

• 2 hours for the first part
• 3 hours for the second part

So, total time is:

$$
2, ext{hours} + 3, ext{hours} = 5, ext{hours}
$$

Step 3: Calculate the average speed

$$
ext{Average Speed} = \frac{300, ext{km}}{5, ext{hours}} = 60, ext{km/h}
$$

✅ Final Answer:

$$
\boxed{60, ext{km/h}}
$$

This is the average speed for the entire trip.