SOLUTION: A kayak moves at a rate of 10 mph in still water. If the river current flows at a rate of 2 mph, how long does it take to travel 25 miles?

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Question 739213: A kayak moves at a rate of 10 mph in still water. If the river current flows at a rate of 2 mph, how long does it take to travel 25 miles?
Answer by josgarithmetic(39614) About Me  (Show Source):
You can put this solution on YOUR website!
Rate in the current when moving along with the current would be 10+2 mph. Rate when moving against the current would be 10-2 mph.

r*t=d, t=d/r.

Which way versus the current is the kayak moving?
With the current, t=25%2F12 hours.
Against the current, t=25%2F8 hours.