Selected information for Sky Company are presented below.

	December 31, 2019	December 31, 2018
Cash	1,000,000	$750,000
Short-term investments	500,000	450,000
Net receivables	2,500,000	2,250,000
Inventories	2,000,000	1,500,000
Total current liabilities	2,900,000	2,250,000

During 2019, net sales were $75,000,000, cost of goods sold was $55,000,000, and net income was $17,500,000.

Required:

Compute the following ratios for Sky Company at December 31, 2019:

a. Current.

b. Acid-test.

c. Inventory turnover.

d. Profit margin.