I need to solve this questions

Suppose Dr. Chu decide to open a donuts shop call Dr. Donuts Dr Chu is able to source flours at $1 per pound ( making 25 donuts) sugar at $4 per pound (making 80 donuts), and butter at $1.80 per pound ( making 30 donuts) while the donuts are not very tasty. Dr, chu believes he can sell a lot of them at $0.50 per donuts. Assuming his rent is $850 per month, corporate tax of $50 per month, and draws a salary of $15 a days in a month) how many donuts must Dr, chu sell in a month to Break-even

how much does flour cost per donuts?

Besides flour, taste other variable cost that Dr, chu has to keep track of.

list items associate with the fixed cost.

with de available data in this problem, how many donuts must Dr, Chu sell in a month to break-even?