Question

An aircraft carrier made a trip to Guam and back. The trip there took three hours and the trip back took four hours. It averaged 6 km/h on the return trip. Find the average speed of the trip there.

Answer 1

the answer is 8.0
i did this in a test a while back :) hope this helps !

Answer 2

Answer: the average speed was 8.0km/h

Explanation: We use the data for the return journey to calculate the distance travelled using the constant velocity equation:
s = vt = 6 x 4 = 24km

Note I didn't change any units so the answer comes out in kilometers.

Now use the distance and time taken to travel to Guam to find the average speed:
v = s/t = 24/3 = 8.0km/h