please help me understand these 5 problems with the work and answers provided

1. COVID-KITS-NOW! is a firm with an annual net income of $20 million, revenue of $60 million and cost of goods sold of $25 million. If the balance sheet amounts show $3 million of inventory and $500,000 of property, plant \& equipment, how many weeks of supply does the firm have? 2. PepsiCo has net revenue of $78B, cost of good sold of $35.8B, inventory investment of \$24B, and total assets of \$40B. Calculate PepsiCo's percentage invested in inventory. 3. Consider a firm with an annual net income of $20 million, revenue of $60 million and cost of goods sold of $25 million. If the balance sheet amounts show $2 million of inventory and $500,000 of property, plant \& equipment, how many weeks of supply does the firm hold? 4. COVID-KITS-NOW! is a firm with an annual net income of $20 million, revenue of $60 million and cost of goods sold of $25 million. If the balance sheet amounts show $3 million of inventory and $500,000 of property, plant \& equipment, what is the inventory turnover? 5. In most manufacturing industries, which of the following would likely represent the largest cost to the firm? purchasing, advertising, financing, insurance, transportation|