Im having a rough time with this set of problems in general, so instead of creating a lot of threads im just going to keep adding what I have here. I am not looking for the answers to my homework, just some guidance and my mistakes pointed out. I appreciate any and all input I receive. 1. The problem statement, all variables and given/known data You jog at 9.5km/h for 8.0km, then you jump into a car and drive an additional 16km. With what average speed must you drive your car if your average speed for the entire 24km is to be 22km/h? 2. Relevant equations I typed the entire question, so im not sure what this specifically wants. 3. The attempt at a solution I calculated the time jogging to be 8km/9.5km/h = .8421 hrs. Then the amount of time to travel 24km with an average speed of 22km/h (22km/h)/(24km) = 0.9167 Next I subtracted the time jogging from the total time needed to travel, to determine how long the car had to cover the remaining distance. 0.9167 - 0.8421 = 0.0746. and found the average speed of the car using average speed = distance / elapsed time 16km/0.0746hrs. = 214.4772km/h. I think with significant digits I report 214.5km/h as my answer for the speed the car must travel. That answer doesnt seem very realistic to me, so I am doubting my process. Also I think theres a much more elegant way or formula to use to solve this problem. Any input?