A bus travels from town A to town B at 60 km/hr. A matatu leaves town A 30 minutes later at 80 km/hr. If the distance between town A and town B is 240 km, how long does it take the matatu to reach tow

The bus left at 11:00 a.m. and the matatu left at 11:30 a.m.
Time difference = 11:30 a.m. - 11:00 a.m. = 30 minutes = 0.5 hours.
Distance covered by the bus in 0.5 hours = Speed $\times$ Time = $60 \text{ km/hr} \times 0.5 \text{ hr} = 30 \text{ km}$.

Total distance between towns A and B = 2