You are considering opening a donut restaurant aimed primarily at the breakfast market.You plan to sell donuts, coffee, and other items in fixed proportion to one another.For each donut sold, you expect the company to sell two cups of coffee and $2 of other items.You expect to earn $0.50 on each donut, $0.50 on each cup of coffee, and $1.00 on the other items.Salaries, equipment, and rent cost about $100,000 per year.What is the break-even quantity of donuts?