Find the average speed per hour of the round trip.
Answer
3.75 km/h
Solution
The distance of one way is assumed to be 15km.
Answer
3.75 km/h
Solution
The distance of one way is assumed to be 15km.
The time of going is 15/3 = 5 hours and returning is 15/5 = 3 hours.
Therefore the average speed per hour is (15 × 2)/(5 + 3) = 3.75 km/h.