4. Angeles Manufacturing use 5,000 semi-conductor pieces per week and then reorders 7,500 per week. The carrying cost per semi-conductor is $5.00 and the fixed order cost is $1,100. Is Raul, the buying manager's inventory policy optimal? Why or why not? 6. Lopez Company, Inc. had on its balance sheet, Cash $75,000, Accounts receivable $85,000, Prepaid expenses $12,000, Inventory $65,000, Loans to shareholders $10,000 and Marketable Securities of $15,000. On the liability side, Lopez had Loans from Shareholders $40,000, Accounts Payable $50,000, Accrued Expenses $6,000, Notes payable due in 1 year or more $80,000 and current portion of notes payable of $18,000. Calculate Lopez's current and quick ratio from the information provided. 15. Yapo, Inc. had budgeted sales on account for the first two months of the current year as follows: January $500,000 February 570,000 All sales are made on terms of 2/10, n/30 and collections on receivables are typically: Collections within the month of sale 60% Within the discount period 10% After the discount period Collections within the month following the sale 15% Within the discount period 10% After discount period 3% Returns and uncollectibles 2% Compute the estimated cash collections for Yapo, Inc for the month of February