Ratio, Rate and Speed - Dividing Quantities in a Given Ratio

During a charity run, Aisha first runs on a sandy track for \(8\) minutes. She then runs \(2.7\) km on a paved road at \(0.18\) km/min, before running on a running track for \(12\) minutes.
Her speeds on the sandy track, paved road and running track are in the ratio \(2:3:4\).

1. Find Aisha's speed on the sandy track, in kilometres per minute.

   [1]

2. Aisha rests for \(4\) minutes before starting the final section. Calculate her average speed for the whole charity run, correct to \(2\) decimal places.

   [2]