A fisherman travels downstream at full speed to his favorite fishing spot. The stream is running at a rate of 5 miles per hour,

Question

n200080 [17]

3 years ago

7

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 he takes an hour to get to the fishing hole. He catches 5 fish and calls it a day. He takes twice as long at full speed to get back to the dock going against the current. How fast will his fishing boat go?

Mathematics

1 answer:

gizmo_the_mogwai [7] · Answer 1 · 2022-03-16T00:36:50+03:00

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 he takes an hour to get to the fishing hole. 
He catches 5 fish and calls it a day. 
He takes twice as long at full speed to get back to the dock going against the current. 
(x + 5)/(x - 5) = 2 
x = 15
The full speed of the fishing boat is 15 miles per hour.