Priya Industries sells their products at Rs$.80$ per unit. They incur a Variable cost of Rs$.45$ to make the product. Annual credit sales of Priya Limited is $50,000$ units. They give a month$$s credit and have a closing debtor balance of Rs$.3,00,000.$ The Finance manager decides to increase the credit period from existing $30$ days to $45$ days. They have an increase in sales quantity by $10\%$ with the closing debtors balance going up to Rs$\mathrm{.}4,24,000.$ Cost of funds for the firm is $20\%.$

Calculate the investment in additional receivables.

What should be the considerations to assess the effectiveness of the additional credit period? Should Priya Industries continue with the relaxed credit or reinstate it to $30$ days?