How would the total (round trip) time in windy weather compare with the total time in calm weather? Please answer this in words, not equations, briefly explaining how you obtained your answer.

It depends upon your mode of transportation.

If headwinds or tailwinds affect the ground speed by adding or subtracting, you will lose more time in a headwind than you gain in a tailwind with the same wind speed, when making a round trip. This is most easily shown with equations, but since you are not allowed to use math, that is all I have to say.