Question

PLEASE ANSWER RIGHT NOW!

A cruise ship traveled to Guam and back.
The trip took ten hours and the trip back took seven hours.
What was the cruise ships average speed on the trip there if it averaged 20 km/h on the return trip?

Answer 1

An aircraft carrier made a trip to Guam and back. 
The trip there took three hours and the trip back took 4 hours.
It averaged 6 km/h on the return trip.
Find the average speed of the trip there. 
:
Let s = speed there
:
Write a distance equation; dist = time * speed
:
Dist there = return dist
3s = 4(6)
3s = 24
s = 
s = 8 km/hr, the trip there
:
:
Check the solution by finding the actual distance, they should be equal
3(8) = 24
4(6) = 24, confirms our solution