Hi-tech Ltd. plans to sell 30,000 units next year. The expected cost of goods sold is as follows: Rs. (Per Unit) Raw material 100 Manufacturing expenses 30 Selling, administration and financial expenses 20 Selling price 200 The duration at various stages of the operating cycle is expected to be as follows: Raw material stage 2 months Work-in-progress stage 1 month Finished stage 1/2 month Debtors 1 month Assuming the monthly sales level of 2,500 units, estimate the gross working capital requirement. Desired cash balance is 5% of the gross working capital requirement, and working- progress in 25% complete with respect to manufacturing expenses.