SOLUTION: A boat takes 5 hours to go 300 km downstream and it takes same time to go 150 km upstream. calculate the speed of boat in still water and speed of stream.

Question 473625: A boat takes 5 hours to go 300 km downstream and it takes same time to go 150 km upstream. calculate the speed of boat in still water and speed of stream.
Found 2 solutions by Alan3354, lwsshak3:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
300/5 = 60 km/hr
150/5 = 30 km/hr
-------------
The boat's speed is the average = (60 + 30)/2 = 45 km/hr
The current is the difference = 15 km/hr

Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
A boat takes 5 hours to go 300 km downstream and it takes same time to go 150 km upstream. calculate the speed of boat in still water and speed of stream
**
let x=speed of boat in still water
let y=speed of stream
speed=distance/travel time
travel time same for downstream and upstream
300/5=x+y
150/5=x-y
60=x+y
30=x-y
add
2x=90
x=45
y=60-45=15
ans:
speed of boat in still water=45 km/hr
speed of stream=15 km/hr
RELATED QUESTIONS
a boat takes 4 hours to go 640km downstream. it takes the same to go 240 km upstream.... (answered by richwmiller)
a boat takes 2 hours to go 30 km downstream and 3 hours to go the same distance upstream. (answered by Tatiana_Stebko)
a boat goes 14 km/h in still water. The boat is paddled 6 km downstream in a river in the (answered by mananth,robertb)
Trey's boat travels 24 km/h in still water. He motors 150 km downstream in the same time... (answered by Fombitz)
A certain plane flying with the wind travels 540 km in 2 hours. Later, flying against the (answered by ankor@dixie-net.com)
a boat travels 50km downstream in the same time that it takes to go 30km upstream. The... (answered by nycsharkman)
A boat travels 60 km downstream in the same time that it takes to go 36 km upstream. The (answered by Paul)
A motorboat goes 36 km downstream in the same amount of time it takes to go 24 km... (answered by Fombitz)
A motorboat goes 36 km downstream in the same amount of time it takes to go 24 km... (answered by Fombitz)