Assuming a 360-day year, calculate how much the average investment in inventory would be for Temasek Holdings, a company based in Singapore, given the following information in each case.

a. The firm has sales of S$750,000, a gross profit margin of 14 percent, and an inventory turnover ratio of 5.

b. The firm has a cost-of-goods-sold figure of S$550,000 and an average age of inventory of 45 days.

c. The firm has a cost-of-goods-sold figure of S$1.25 million and an inventory turnover rate of 7.

d. The firm has a sales figure of S$27 million, a gross profit margin of 16 percent, and an average age of inventory of 50 days.