Annual production = 150,000 units.
Cost per unit:
Raw materials = Tk. 9
Direct labor = Tk. 4
Overhead = Tk. 7
Total cost per unit = Tk. 20
Annual costs:
Raw materials = 150,000 × 9 = Tk. 1,350,000
Wages = 150,000 × 4 = Tk. 600,000
Overhead = 150,000 × 7 = Tk. 1,050,000
Now calculate the working-capital requirements.
- Raw materials inventory — 1 month:
1,350,000 × 1/12 = Tk. 112,500
- Work-in-process — 1/2 month:
Assuming materials are 100% introduced and labor and overhead are 50% complete:
Raw materials:
1,350,000 × 1/24 = Tk. 56,250
Labor:
600,000 × 1/24 × 50% = Tk. 12,500
Overhead:
1,050,000 × 1/24 × 50% = Tk. 21,875
Total WIP:
56,250 + 12,500 + 21,875 = Tk. 90,625
- Finished goods — 1 month:
Annual production cost = 150,000 × 20 = Tk. 3,000,000
Finished goods:
3,000,000 × 1/12 = Tk. 250,000
- Debtors
One-fourth of sales are cash sales, so three-fourths are credit sales.
Credit production:
150,000 × 3/4 = 112,500 units
Two months' credit:
112,500 × 2/12 = 18,750 units
Using production cost of Tk. 20 per unit:
Debtors = 18,750 × 20
= Tk. 375,000
- Cash balance:
Tk. 5,000
Therefore, total current assets:
112,500 + 90,625 + 250,000 + 375,000 + 5,000
= Tk. 833,125
Now calculate current liabilities.
- Creditors for raw materials — 1 month:
1,350,000 × 1/12
= Tk. 112,500
- Outstanding wages — 1.5 weeks:
600,000 × 1.5/52
= Tk. 17,308 approximately
- Outstanding overhead — 1 month:
1,050,000 × 1/12
= Tk. 87,500
Total current liabilities:
112,500 + 17,308 + 87,500
= Tk. 217,308
Required working capital:
Working Capital = Current Assets - Current Liabilities
= 833,125 - 217,308
= Tk. 615,817 approximately
Therefore, Bristhi Ltd. requires approximately:
Tk. 615,817 of working capital.
Note: This uses the usual working-capital convention of valuing debtors at cost rather than including the profit element.