Posted by **Anonymous** on Sunday, March 2, 2008 at 3:13pm.

A pilot must fly his plane to a town which is 200km from his starting point in a direction 30degrees N of E. He must make the trip in 1/2 h. An 80km/h wind blows in a direction 30degrees E of S. Find the speed of the plane relative to air.

I found the speed of the plane relative to the ground is 400km/h.

The answer for the speed of the plane relative to the air is 408 km/h. Can someone please explain HOW you would get that.

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