SOLUTION: A plane has a cruising speed of 300 miles per hour when there is no wind. At this speed, the plane flew 600 miles with the wind in the same amount of time it flew 400 miles agai

Question 954910: A plane has a cruising speed of 300
miles per hour when there is no wind. At this speed, the plane flew
600 miles with the wind in the same amount of time it flew
400 miles against the wind. Find the speed of the wind.
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
W=wind speed
Multiply each side by (300mph-W)(300mph+W)

Subtract 120000 from each side.
Add 600W to each side.
Divide each side by 1000
ANSWER: The wind speed is 60 mph.
CHECK:

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