what is another way of answering this question? please put it in simplified way and the book source too for addition data

The managers of Finozest Ld are worried about the level of the company's interest payments. Financial information for the last 30 months is given below. Finozest Ltd offers a cash discount of 2% for payment within seven days. The normal credit period is 45 days. In Groups allocated, required: a) Finozest's manager estimates that the interest cost of financing inventory and accounts receivable has increased by more than 50% during the last 30 months. Evaluate whether you agree with this estimate, demonstrating: (i) why interest costs have increased; and (ii) any significant changes in inventory management and accounts receivable payment patterns. b) Evaluate why the percentage of credit sales represented by customers taking the early settlement discount has fallen, and recommend whether the company should continue to offer the early settlement discount for payment in seven days. c) Discuss strategies that the managers of Finozest Ltd might adopt to reduce the interest costs of accounts receivable and inventory. The managers of Finozest Ld are worried about the level of the company's interest payments. Financial information for the last 30 months is given below. Finozest Ltd offers a cash discount of 2% for payment within seven days. The normal credit period is 45 days. In Groups allocated, required: a) Finozest's manager estimates that the interest cost of financing inventory and accounts receivable has increased by more than 50% during the last 30 months. Evaluate whether you agree with this estimate, demonstrating: (i) why interest costs have increased; and (ii) any significant changes in inventory management and accounts receivable payment patterns. b) Evaluate why the percentage of credit sales represented by customers taking the early settlement discount has fallen, and recommend whether the company should continue to offer the early settlement discount for payment in seven days. c) Discuss strategies that the managers of Finozest Ltd might adopt to reduce the interest costs of accounts receivable and inventory