| Items | Parameter | Amount | |
| Tk | US$ | ||
| Fixed cost items | Purchase price of weeder (P), | 1500 | 17.65 |
| Salvage value(S), (10% of P) | 150 | 1.76 | |
| Working life (L), yr | 5 | - | |
| Average working hours per year | 480 | - | |
| Variable cost items | Labour (Tk or US$/hr) | 50 | 0.59 |
| Repair and maintenance (Tk or US$/yr) | 0 | - | |
| Field capacity (ha/hr) | 0.0203 | - | |
| Calculations | |||
| Fixed costs | Annual depreciation, D = (P − S)/L Tk or US$/yr | 270 | 3.18 |
| Interest on investment, I = (P + S)/2 * I, where the rate of interest is 12% | 99 | 1.16 | |
| Total fixed cost | (Tk or US$/yr) | 369 | 4.34 |
| Total fixed cost | (Tk or US$/hr) | 0.77 | 9.06 × 10−3 |
| Total fixed cost | (Tk or US$/ha) | 36.61 | 0.43 |
| Variable cost | Labour (Tk/hr) | 50 | 0.59 |
| Repair and maintenance (Tk/hr) | 0 | - | |
| Total variable cost | (Tk or US$/hr) | 50 | 0.59 |
| Total variable cost | (Tk or US$/ha) | 2380.95 | 28.01 |
| Operating cost | (Tk or US$/hr) | 50.77 | 0.597 |
| Operating cost | (Tk or US$/ha) | 2431.72 | 28.61 |