What are the two primary measures of the operational efficiency of a company?

Inventory Turnover Ratio and Working Capital Turnover Ratio

Activity (or Turnover) Ratio : These ratios indicate the speed at which, activities of the business are being performed. The activity ratios express the number of times assets employed, or, for that matter, any constituent of assets, is turned into sales during an accounting period. Higher turnover ratio means better utilisation of assets and signifies improved efficiency and profitability, and as such are known as efficiency ratios. The important activity ratios calculated under this category are
1. Inventory Turnover
2. Trade receivable Turnover
3. Trade payable Turnover
4. Investment (Net assets) Turnover
5. Fixed assets Turnover
6. Working capital Turnover