Very helpful resource, this teacher has won awards and is very clear when explaining questions.
Note Q9c He also queries the official answer. Agrees with my calculation
Note Q9c The above video also queries the official answer. Agrees with my calculation 12200 ÷ 264 = 46.21km/hr. Possibly using the 11680 distance would be a straight line distance flown 11680 ÷ 264 = 4.24 km/hr. Always justify what your answer is showing and put the alternative answer as well. Just in case.