What is the wind speed?

Question

An airplane makes a 990-mi flight with a tail wind and returns, flying into the wind. The total flying time is 3h 20min, and the plane's airspeed is 600mph. What is the wind speed?

Answer 1

1980miles/3.3hours = 600 miles/hour,

or, you could be picky and divide 1980 by 3.33333... hours and get a possible 6mph tail wind on the initial trip.