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

A cyclist travels along a route consisting of an uphill section, a level section and a downhill section.
She cycles uphill for \(12\) minutes, then travels \(4.8\) km along level ground at \(0.24\) km/min, before cycling downhill for \(10\) minutes.
The ratio of her speeds uphill, on level ground and downhill is \(3:4:6\).

1. Find her speed while cycling uphill, in kilometres per minute.

   [1]

2. She stops for \(3\) minutes after completing the level section. Find her average speed for the whole journey, in kilometres per minute, correct to \(2\) decimal places.

   [2]