Answer:
The wind speed is 20 miles per hour.
Step-by-step explanation:
Speed = distance/time.
With the wind
230 + w = 400 / t where w is the speed of the wind.
Against the wind:
230 - w = 336/t
From the above equations:
t = 400/ (230 + w)
t = 336/ (230 - w) So:
400/ (230 + w) = 336/ (230 - w)
336(230 + w) = 400(230 - w)
77280 + 336w = 92000 - 400w
736w = 92000 - 77280 = 14720
w = 14720 / 736
w = 20.
