Thato manufactures present you the following costs and activity/ output levels for the first quarter of the year: Month Mixed cost Activity/output levels January R775 750 February R925 900 March R1050 1025 April R975 950 May R885 860 Required: Calculate the following using high/low method: 3.1.1 Variable cost per unit 3.1.2 Total fixed cost 4 Marks 4 Marks 3.1.3. Mixed cost for June if estimated production is I 230 units 2 Marks