Determine the hourly and per hectare cost for plowing with a 93 kw diesel 2-WD tractor and a five bottom 40 cm plow. The average field speed is 7.2 km/hr. The tractor list price is SDG 700,000 and it is used for an average of 650 hours per year. The list price for the plow is SDG 150,000 and it is used for an average of 200 hours per year. The machinery is expected to be used over a ten years period. Diesel fuel is purchased at SDG 5/Liter. The labour cost is SDG 20 per hour and the field efficiency may be estimated as 70% Fuel consumption is 10 L/hr. (20 marks)