I have a question

An airplane is flying at 120km/h due west moves into a region where the wind is blowing at 40km/h. If the planes original velocity is Vplane, what is the expression for the plane's resulting velocity in terms of V plane?

Answers are given 1/3 greater than Vplane
2/3 greater than Vplane
1 v Plane
80Vplane

I think it is 80vplane because you have to subtract the two velocitiesbit a friend of mine doing the same problem said it was 2/3 greater than vplane-I don't think is correct