Peterson Jewelry had the following data (in thousands of South African Rands, ZAR) for a given period. Assume there are no inventories. Fill in the blanks.

Sales ZAR …………………………………. ___

Direct materials ……………………………. 355

Direct labor ………………………………… ___

Indirect manufacturing ……………………… ___

Manufacturing cost of goods sold ………….. 745

Gross margin ……………………………….. 135

Selling and administrative expenses ……….. ___

Operating income ……………………………. 30

Prime cost (direct materials + direct labor) … 575