To find out how far Lefa will drive in 3 hours at the same average speed, we first need to determine his average speed from the first part of the trip.
Lefa drove 120 km in 2 hours. We can calculate his average speed using the formula:
\[ \text{Average Speed} = \frac{\text{Distance}}{\text{Time}} = \frac{120 \text{ km}}{2 \text{ hours}} = 60 \text{ km/h} \]
Now that we know his average speed is 60 km/h, we can find out how far he will drive in 3 hours by using the same formula for distance:
\[ \text{Distance} = \text{Speed} \times \text{Time} \]
So for 3 hours at 60 km/h:
\[ \text{Distance} = 60 \text{ km/h} \times 3 \text{ hours} = 180 \text{ km} \]
Therefore, Lefa will drive 180 km in 3 hours if he continues at the same average speed.