SOLUTION: An airplane can travel 320 mph in still air. If it travels 690 miles with the wind in the same length of time it travels 510 miles against the wind, what is the speed of the wind?

Question 370894: An airplane can travel 320 mph in still air. If it travels 690 miles with the wind in the same length of time it travels 510 miles against the wind, what is the speed of the wind? I have the answer I just need help creating an equation for this word problem. The answer is 48 mph.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
t = d / r ___ the times are equal

690 / (320 + w) = 510 / (320 - w)

"cross" multiplying is a good start
RELATED QUESTIONS
An airplane can travel 425 mph in still air. If it travels 4131 miles with the wind in... (answered by josmiceli)

An airplane can travel 330 mph in still air. If it travels 2880 miles with the wind in... (answered by josgarithmetic,MathTherapy)

An airplane can travel 440 mph in still air. If it travels 950 miles with the wind in the (answered by josgarithmetic,MathTherapy)

An airplane can travel 330 mph in still air. If it travels 744 miles with the wind in the (answered by jorel555)

An airplane can travel 380 mph in still air. If it travels 3699 miles with the wind in... (answered by MathLover1)

an airplane can travel 345 mph in still air. if it travels with the wind in the same... (answered by ikleyn,josgarithmetic)

an airplane can travel 525 mph in still air. if it travels 3850 miles with the wind in... (answered by TimothyLamb)

An airplane can travel 395mph in still air. If it travels 1242 miles with the wind in the (answered by ikleyn,Alan3354)

An airplane flying against the wind travels 300 miles in the same time that it can travel (answered by richwmiller)