Argo sales corporation has in recent years maintained the following relationships among the data on its financial statements: ? gross profit margin 40% ? net profit margin 10% ? rate of selling expenses to net sales 20% ? accounts receivable turnover 8 times per year ? inventory turnover 6 times per year ? quick-asset composition: 8% cash, 32% marketable securities, 60% accounts receivable ? acid-test ratio (quick ratio) 2-to-1 ? current ratio: 3-to-1 ? asset turnover: 2 per year ? ratio of total assets to intangible assets 20-to-1 ? ratio of accumulated depreciation to gross property, plant and equipment : 1-to-3 ? ratio of accounts receivable to accounts payable: 1.5-to-1 ? ratio of working capital to stockholders