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Revenue: Quantity sold $\times$ Price
Productivity: $\frac{\text{Output}}{\text{Quantity of input}}$
Labor Productivity: $\frac{\text{Output}}{\text{Number of employees}}$
Working Capital: Current Assets $-$ Current Liabilities
Capital Employed (or Shareholder's funds): Total Assets $-$ Total Liabilities
Profit: Revenue $-$ Cost of sales
Profit (from Break even graph): Total Revenue $-$ Total Costs or $TR - TC$
Total Costs: Fixed Costs $+$ Variable Costs or $FC + VC$
Average Cost: $\frac{\text{Total Costs}}{\text{Total Number of units produced}}$
Break even point: $\frac{\text{Fixed costs}}{\text{Contribution per unit}}$ or $\frac{FC}{SP - VC}$
Contribution per unit: Selling price $-$ Variable costs
Margin of safety: Maximum output $-$ Break even output
Gross profit: Revenue $-$ Cost of sales (or Variable costs)
Gross profit margin: $\frac{\text{Gross profit}}{\text{Revenue}} \times 100$
Net profit: Gross profit $-$ Expenses (or Fixed costs)
Net profit margin: $\frac{\text{Net profit}}{\text{Revenue}} \times 100$
Return on Capital Employed: $\frac{\text{Net profit}}{\text{Capital Invested}} \times 100$
Current ratio: $\frac{\text{Current Assets}}{\text{Current liabilities}}$
Safest ratio is 2:1 or 3:1
Acid Test Ratio (or Quick Ratio): $\frac{\text{Current Assets} - \text{Inventory (or Stock)}}{\text{Current Liabilities}}$
Safest ratio is 1.5:1