Explanation:
The wind speed slows the plane down as much as it speeds it up
(175 + 116)/2 = 145.5 km/hr <=====airplane speed
wind speed = 175 - 145.5 = 29.5 km/hr
As a check : 116 + 29.5 = 145.5 Check !
8.8m questions
11.4m answers