Here is the answer for the question – **A plane can travel 640 miles against the wind in the same time it can travel 800 miles with the wind. If the plane can fly 180 mph in calm air, what is the speed of the wind?**. You’ll find the correct answer below

### A plane can travel 640 miles against the wind in the same time it can travel 800 miles with the wind. If the plane can fly 180 mph in calm air, what is the speed of the wind?

If x represents the speed of the wind, which expression represents the time it takes for the plane to travel the 640 miles against the wind?

**The Correct Answer is**

**640/(180 – x)**

### Reason Explained

640/(180 – x) is correct for A plane can travel 640 miles against the wind in the same time it can travel 800 miles with the wind. If the plane can fly 180 mph in calm air, what is the speed of the wind?

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