The distance by air from Kuching to Kota Kinabalu on a map is 5.4 cm. It is given that the
scale of the map is 1 cm : 150 km. If an aeroplane takes off from Kuching International Airport
at 1240 hours and lands at Kota Kinabalu International Airport at 1410 hours, calculate the
average speed of the aeroplane in km h^-1​