SOLUTION: If boat goes downstream 72 miles in 3hrs and upstream 60 miles in 6hrs, the rate of the river and the rate of the boad in still water respectively are ___?
Algebra ->
Customizable Word Problem Solvers
-> Misc
-> SOLUTION: If boat goes downstream 72 miles in 3hrs and upstream 60 miles in 6hrs, the rate of the river and the rate of the boad in still water respectively are ___?
Log On
Question 168984: If boat goes downstream 72 miles in 3hrs and upstream 60 miles in 6hrs, the rate of the river and the rate of the boad in still water respectively are ___? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 72/3=24 mph downstream.
60/6=10 mph up stream.
(24-10)/2
14/2=7 mph is the current.
Proof:
24-7=17 mph is the speed of the boat.
10+7=17 ditto.
(