Question

Yoohoo, hey, I have another ridiculously complicated problem that has two parts to it.
Here's a chance to get two medals, btw
To get to school from home, Lana has to cycle one mile up a hill and one mile down the other side. She averages 10mph on the way up the hill.
Part the first: What constant speed must Lana go down the hill if she wishes to average 12mph for the whole journey?
Part the second: Explain why it's impossible for Lana to average 20mph for the entire journey.

Thanks :)

Answer 1

yeah, this is basically a copy of the previous question, but something weird happened so yeah, teehee

Answer 2

Since this is technically two questions, the person who answers this I will give a medal, and then post a new question: Hey (insert person's name) and mention the person, and then give a second medal.

Answer 3

If you answer only one part, then I'll give you one medal, and the second person who answers will get a medal using the same method above. :)

Answer 4

hmmm this is a tough one...