A man travels 80 km in three hours. He further travels for two more hours. Find the distance travelled in the latter two hours, if his average speed for the entire journey is 30 km/h.

Distance traveled in the first 3 hours = 80 km

Additional time traveled = 2 hours

Average speed for the entire journey = 30 km/h

​$$\text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}}$$​​

Distance in the latter two hours = Total Distance - Distance in the first 3 hours

Total Time = 3 + 2 = 5 hours

Total Distance = Average Speed × Total Time = 30 × 5 = 150 km

Distance in the latter two hours = 150 − 80 = 70 km

Thus, The distance traveled in the latter two hours is 70 km.