SOLUTION: The speed of a stream is 3 mph. A boat travels 5 miles upstream in the same time it takes to travel 11 miles downstream. What is the speed of the boat in still water?
Any in
Algebra.Com
Question 428106: The speed of a stream is 3 mph. A boat travels 5 miles upstream in the same time it takes to travel 11 miles downstream. What is the speed of the boat in still water?
Any insight please.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
boat speed x mph
current speed 3 mph
..
against current x - 3 mph
with current x + 3 mph
Distance upstream= 5
Distance downstream= 11
Time = same
5 /(x- 3 )= 11 /(x+ 3 )
5 *(x+ 3 )= 11 *(x- 3 )
5 x + 15 = 11 x -33
11 x -5 x = 33 + 15
6 x = 48
/ 6
x= 8 mph
RELATED QUESTIONS
The speed of a stream is 3 mph. A boat travels 5 miles upstream in the same time it takes (answered by nerdybill)
The speed of a stream is 4 mph. A boat travels 11 miles upstream in the same time it... (answered by stanbon)
The speed of a stream is 3 mph. A boat travels 4 miles upstream in the same time it takes (answered by checkley77)
the speed of a stream is 3 mph. A boat travels 3 miles upstream in the same time it takes (answered by mananth,richwmiller)
The speed of a stream in 5 mph. If a boat travels 82 miles downstream in the same time... (answered by ankor@dixie-net.com)
The speed of a stream is 5 mph. If a boat travels 72 miles downstream in the same time... (answered by stanbon)
The speed of a stream is 5 mph. A boat travels 9 miles upstream in the same time it takes (answered by ikleyn)
The speed of a stream is 5 mph. A boat travels 2 miles upstream in the same time it takes (answered by stanbon,josmiceli)
The speed of a stream is 5 mph. A boat travels 7 miles upstream in the same time it takes (answered by ikleyn,4198181)