SOLUTION: please help me solve this equation: Barb ran 200m with the wind in 20s and against the wind in 25s. Find Barb's running speed and the wind speed.

Question 758376: please help me solve this equation: Barb ran 200m with the wind in 20s and against the wind in 25s. Find Barb's running speed and the wind speed.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Barb ran 200m with the wind in 20s and against the wind in 25s. Find Barb's running speed and the wind speed.
***
let x= Barb's running speed
let c=wind speed
Barb's speed with the wind=x+c
Barb's speed against the wind=x-c
distance/speed=travel time
..
200/(x+c)=20
200/(x-c)=25
..
200=20x+20c
200=25x-25c
..
10=x+c
8=x-c
2x=18
x=9
c=x-8=1
Barb's running speed=9 m/s
wind speed=1 m/s
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