SOLUTION: A jet ski can go 12 mph in still water. If a rider goes upstream for 3 hours againts a current of 4 mph, how long will it take the rider to return? (Hint: Upstream speed is (12-4)m

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Question 10325: A jet ski can go 12 mph in still water. If a rider goes upstream for 3 hours againts a current of 4 mph, how long will it take the rider to return? (Hint: Upstream speed is (12-4)mph; how far can the rider go in 3 hours?
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
In 3 hours going upstream at a net of 8 miles per hour, would be 24 miles upstream.

So the speed downstream would be 12 mph + 4 mph for the stream = 16 mph.

The time it takes to return is Distance%2FRate+=+%2824+miles%29%2F%2816+mph%29=1.5 hours.

R^2 at SCC