Answer:
14.5 hours
Explanation:
Take the return trip situation.
From town to village
- Distance = 30 km
- Speed = 2 km/h
- Time = Distance/Speed = 15 hours
That is equal to the sum of t, the time taken from the village to the city and 30 minutes.
⇒ t + 30 minutes = 15 hours
⇒ t + 0.5 hours = 15 hours
⇒ t = 14.5 hours