Posted by **Mikel** on Tuesday, March 22, 2011 at 2:02pm.

An airplane can travel 380 miles into the wind in the same time that it can travel 420 miles with the wind. If the wind speed is 10 miles per hour, find the speed of the airplane without any wind.

Is this correct:

380(x-10)=420(x+10)

380x-3800=420x+4200

-420x -420x

-40x-3800=4200

+3800 +3800

-40x=8000

-40x/-40=8000/-40

x=200

is 200 miles the answer?

## Answer This Question

## Related Questions

- math - An airplane flying against the wind travels 100 miles in the same amount ...
- math - A pilot can travel 400 miles with the wind in the same amount of time as ...
- 11 - How do I work this problem? Flying with the wind, an airplane can travel ...
- algebra - Can someone show me how to set this up rational expressions. A pilot ...
- Algebra - If a plane can travel 500 miles per hour with the wind 400 miles per ...
- math - A airplane crosses the Atlantic Ocean (3000 miles) with an airspeed of ...
- algebra - A plane takes 3 hours to travel 1500 miles with the wind. it can ...
- Math I Have no idea PlEASE help me - Wind can affect the speed of an airplane. ...
- Algebra - A plane has a cruising speed of 100 miles per hour when there is no ...
- math - IF a plane can travel 500 miles per hour with the wind and 420 miles per ...

More Related Questions