SOLUTION: A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour, and the trip takes 2 hours to get to the fishing hol

Question 371972: A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour, and the trip takes 2 hours to get to the fishing hole. He is surprised, however, to find that the trip takes 6 hours at full speed to get back to the dock when he is finished. How fast will his fishing boat go?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!



Hi,

Let x represent the speed of the fishing boat.

d = r*t  distance the same to and from the fishing hole

The stream is running at a rate of 5 miles per hour****

(x+ 5mph)* 2 = (x - 5mph)*6

solving for x

2x + 10mph = 6x - 30mph

40mph = 4x

10mph = x, the speed of the fishing boat.



checking our answer

15mph*hr2 = 5mph*6hr 

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