Describes about the price-demand-costs and revenue of store

Below table is describes about the price,demand,costs and revenue of lemonade store. Now for a given price, how many glasses of lemonade does a lemonade store need to sell per year to break even?
Price 4.00$
demand 29000
Unit cost 0.45
Fixed cost 45000
revenue Demand * price
Variable cost Unit cost* demand
profit Revenue-fixed cost-variable cost

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