The following details appeared in the final accounts of a sole trader's business: R8 400 4 000 5 000 2 400 Current assets Current liabilities Gross profit Net profit Purchases Sales Capital 16 000 21 000 30 000 NB! We have not shown the opening and closing stocks, as they are identical figures. You are required to answer the following questions: (a) What is the ratio between the current assets and current liabilities, and is it a satisfactory one? (b) What is the percentage gross profit on turnover? (c) What is the average mark-up percentage on purchases? (d) What is the capital yield to the owner, expressed as a percentage? (e) Would the owner do better by investing her capital in a building society at 7% per annum? (4) (4) (4) (4) (4) [20]