You produce toys which you sell for £10 each. Each toy costs £2 to make, in addition to which you have fixed costs of £10,000 per year. How much profit will you make in a year if you sell a particular number of toys?
假设您生产玩具，且每个玩具的价格是 $10，每个玩具的成本是 $2，另外每年的固定成本是 $10,000。当一年售出若干个布老虎时，一年的赢利是多少？