Following is the balance sheet of Campbell Company for 2018: CAMPBELL COMPANY Balance sheet Assets Cash Marketable securities Accounts receivable Inventory Property and equipment Accumulated depreciation Total assets Liabilities and Stockholders' Equity Accounts payable Current notes payable Mortgage payable Bonds payable Common stock Retained earnings Total liabilities and stockholders' equity $ 15,250 7,700 12,680 10,900 173,000 (12,500) $207,630 $ 8,990 3,440 4,600 21,900 113,700 54,400 $207,030 The average number of common stock shares outstanding during 2018 was 870 shares. Net income for the year was $15,000. Required Compute each of the following: (Round your answers to 2 decimal places.) per share a. Current ratio b. Earnings per share c. Quick (acid-test) ratio d. Return on investment e. Return on equity 1. Debt to equity ratio