According to the problem she never walked along the oval, so the entire route was walked on flat road. Thus, since the trip out and back was the same distance, d/t = 4 km/h. t = 5 h, so d = 20 km.Originally Posted by fring
Somehow I doubt this is what the problem was intending. Presumably she actually DID walk along the oval, but since there is no specific information regarding the oval, and an apparent misprint about it, we can't really solve the problem.
And if you found this problem on the internet how could it be "Urgent Homework Help?"