let S equal speed in still water , and C equal the speed of the current
S - C = 10 km / 2 hr = 5 kph
S + C = 18 km / 2 hr = 9 kph
adding equations (to eliminate C) ... 2 S = 14 kph
solve for S , then substitute back to find C
A man paddles his canoe 10 km upstream in 2 hours. Then, he paddles downstream
18 km in 2 hours. What is the speed of the canoe in still water and what is the speed of the current?
2 answers
What is the answer?