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Suppose you write a book. The printer charges $4 per book to print it, and you spend $5500 on advertising. You sell the book for $15 a copy. How many copies must you sell to break even (total cost equals income for sales)? What is your income (or costs) for that many copies?



Answer :

mumsy
you will need to write an equation to do things faster
let be x number of copies sold to break even
5500+4x= 15 x
5500= 15x-4x
5500=11x
x= 500
you need to sell 500 copies to break even
500 x15= $ 7500

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