SOLUTION: If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________?

Algebra ->  Human-and-algebraic-language -> SOLUTION: If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________?      Log On


   

Question 118567:
If a boat goes downstream 72 miles in 3 hours and upstream 60 miles in 6 hours, the rate of the river and the rate of the boat in still water respectively are ________?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
72/3=24 RATE GOING DOWN STREAM.
60/6=10 RATE GOING UP STREAM.
(24-10)/2=14/2=7 IS THE RATE OF THE RIVER.
24-7=17 IS THE SPEED OF THE BOAT IN STILL WATER.
10+7=17 DITTO.