Variable STEP 2 Recopy the table below to your answer book and determine the missing values: Quantity Labour Fixed Total Total of unit costs costs costs revenue Profit Loss Marginal costs scones 0 0 50 100 SO Sp 10 1 50 60 10 60 600 20 3 50 7060 110 2700 30 5 50 8090 140 4200 40 6 50 90240 290 50 7 50 100350 400 60 9 50 110540 S90 70 10 50 120700 750 80 11 50 880 930 90 12 50 1080 1130 (5 x 3) (15)