Sample exercise: By using the above formula list, calculate the following items. Sample exercise1: Presented below are the components for Rozelle Ltd's income statement. Determine the missing amounts and show the workings. (Note: Need to show workings by formula). Do your own. Sales Cost of Sales Gross Profit Expenses Net Profit 75 000 28 600 n. 10 800 108 000 70 000 29 500 U n. 71 900 99 600 39 500 ~ . Sample exercise 2: Fill in the missing items for each independent case. The cost of sales is 60 per cent of revenue for each case. Show the workings. Do your own. Revenue - (cost of sales + other expenses) = Profit Revenue Cost of Sales Other Expenses Profit 220000 63000 141000 35000 124500 15000 915000 86000 76200 32000