Question

A cruise ship made a trip to Guam and back. The trip there took 12 hours and the trip
back took nine hours. It averaged 20 km/h on the return trip. Find the average speed of the trip there. Explain

Answer 1

Answer:

The average speed is 8.0 km/h

Explanation:

We use the data for the return journey to calculate the distance travelled using the constant velocity equation:

s  =  v  t  =6*4=24km

 

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:

v=st=24/3=8.0km/h