Bongani Limited manufactures a product that sells for R120. He manufactured and sold 12 500 units during the previous month. The following additional information, for this activity level, is available: Total direct material cost R281 250 Direct labour cost per hour R12 Direct labour hours needed per product 1 Total variable manufacturing overheads R122 500 Sales commission (of the selling price) 2 % Total fixed manufacturing overheads R360 000 Other fixed costs in total R420 000 Do the following calculations, according to the instructions given: Required: (a) Calculate Bonganis net profit for the month. Compile a marginal income statement to present your answer.