一. 课前思考题
In this unit we will discuss the relationship among cost, sale volume and profit.

Suppose you are the cost manager of Luckin Coffee. You need to sell the products as soon as possible to recoup funds.
Fhe cost of coffee bean for every cup of coffee is 5RMB and the cup is 2 RMB each. The rent of shop and machinery you need pay each month is 20,000 RMB. We already know that for each cup of coffee, the selling price is 14RMB.
Then how many cups of coffee do you have to sell at least each month? What kinds of cost will vary according to the level of production? What kingds of cost remain constant no matter how many cups of coffee we sell.
假设你将要开立一家咖啡店,每销售一杯,咖啡豆和杯子等的成本为2元/杯,每个月你需要支付租金及咖啡机的设备租赁费为2000元/月,如果一杯咖啡售价为12元/杯,那么你一个月至少要销售多少杯咖啡呢?在这个例子中有哪些成本是随生产量销售量变动而变化的?哪些成本是不管销售量为多少都保持不变的呢?
二. 本课学习目标
掌握保本点的计算与运用
掌握固定成本、可变成本、销售或销售价格的变动对利润的影响
掌握本量利分析在经营决策中的应用

