nathan is out rafting. he rafts 16 miles with the river current. at the end of 16 miles, he turns around and rafts the same distance against the river current. the journey takes him about 4 hours overall. if he can raft at a speed of 9 mph in still water, what is the speed of the current of the river he is in?
8 miles per hour I believe, that's what my friend who just took a test with this question on it told me. (I'm a history major, so honestly, I don't know. I'm sorry I don't know more!) I hope this helps!
