An aircraft carrier made a trip to Guam and back. The trip there took three hours and the trip back four hours. It averaged 6 km/h on the return trip. What is the average speed of the trip there?
The average speed is 8.0 km/h
We use the data for the return journey to calculate the distance travelled using the constant velocity equation:
Note I didn't change any units so the answer comes out in kilometres.
Now use the distance and time taken to travel to Guam to find the average speed: