13\ Identify, from the following, an unavoidable cause of labor turnover:

a\ Work pressure

b\ Lack of cooperation

c\ Job dissatisfaction

d\ Death

14\ The purchase price of a product is OMR 7. The normal demand is 2,500 units per month. Company has to spend OMR 140 per order. The storage expense is estimated @ 10 % purchase cost. The economic order quantity for the business will be:

a\ 3,378 units

b\ 3,465 units

c\ 3,007 units

d\ 2,877 units

15\ Identify the correct equation to calculate profit under marginal costing:

a\ Net Profit = sales cost of goods sold

b\ Net Profit = sales variable cost - fixed cost

c\ Net Profit = sales + cost of goods sold fixed and variable selling expense

d\ Net profit = sales + fixed and variable selling and office expense

choose the correct answer . Give me the question number and answer code. I hope that you will help me and solve all the questions. Thank.