An airplane flew 3 hours with a 40 mph head wind. The return trip with a tail wind...

[Peter J]

ask this one in the algebra section.

 

[Peter J]

ask this one in the algebra section.

 

[Peter J]

ask this one in the algebra section.

 

[Peter J]

ask this one in the algebra section.

 

[racingfingers94]

...of the same speed took? 2 hours. Find the speed of the plane in still air.

180 mph

200 mph

220 mph

240 mph