alculating Gross Profit and Inventory Turnover The following table presents sales revenue, cost of goods sold, and inventory amounts for three computer/electronics companies, Dell Inc., Hewlett-Packard Company, and Apple Inc.

$ millions	Fiscal year ending
Samsung Electronics Co. Ltd. (S. Korean won)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues	203,205,987	225,692,667	198,103,613
Cost of goods sold	126,278,800	135,696,309	124,651,931
Inventory	15,817,504	17,634,868	16,247,413
Hewlett-Packard Company (US dollar)	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Revenues (Products only)	127,245	126,033	114,552
Cost of goods sold	67,167	67,064	58,503
Inventory	7,490	6,466	6,128
Apple Inc. (US dollar)	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012
Revenues	108,249	65,225	42,905
Cost of goods sold	66,431	41,541	27,683
Inventory	776	1,051	455

Required: a. Compute the gross profit margin (GPM) for each of these companies for all three fiscal years. (Round your answers to one decimal place.)

	2014	2013	2012
Samsung	Answer%	Answer%	Answer%
Hewlett-Packard	Answer%	Answer%	Answer%
Apple	Answer%	Answer%	Answer%

b. Compute the inventory turnover ratio and the average inventory days outstanding for each company for the last two fiscal years. (All three firms use FIFO inventory costing.) (Round your answers to one decimal place.)

	Inventory Turnover 2014	Inventory Turnover 2013	AIDO 2014	AIDO 2013
Samsung	Answer	Answer	Answer	Answer
Hewlett-Packard	Answer	Answer	Answer	Answer
Apple	Answer	Answer	Answer	Answer