Solve problems involving direct and inverse proportion, including graphical and algebraic representations

1. WonderLand Maths: Ratio calculations
2. Finishing the fence: Calculate time taken from rate of work
3. Boat rations: Calculate with reference to man-days of work
4. The Sanders Family Pool! - time taken to fill pool from 40000L to 43000L
5. Boat rations: Calculate with reference to man-days of work
6. Painting to scale: Investigate proportional relationships (1)