Thank you guys so much for all the help you have given me. I do have one more question before the test though (that's in 40min). I don't know how to do this problem.
A pilot flew a jet from Montreal to Los Angeles, a distance of 2500 mi. On the return trip the average speed was 20% faster than the outbound speed. The round-trip took 9h 10min. What was the speed from Montreal to Los Angeles?
Just need help understanding the modeling.