A plane leaves London on a flight to Dubai.

1. (a)The plane lands in Dubai where the local time is 17 20. The flight time is 6 hours 50 minutes. The local time in Dubai is 3 hours ahead of the local time in London. Calculate the local time in London when the flight left.[2]
2. (b)At one time during the flight the temperature inside the plane is 17°C. The temperature outside the plane is -43 °C. Work out the difference between the inside and outside temperatures.[1]
3. (c)The plane leaves London where the temperature outside is 17°C. The plane rises to a height where the temperature outside is -43 °C. The temperature decreases by 2°C with every increase of 300m in height. Calculate the increase in height of the plane.[1]