Suppose your 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. A. How many copies must you sell to break even (total cost equals income from sales)? B. What is your income (or total cost) for that many copies?

Question

Suppose your 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.  A. How many copies must you sell to break even (total cost equals income from sales)? B. What is your income (or total cost) for that many copies?

kropot72 · Answer

Let n = number of books that must be sold to break even.
Total cost of books (production + advertising) = 4n + 5500
Income from sales = 15n
Break even occurs at the following condition:
15n = 4n + 5500 ............(1)
Now you need to solve equation (1) to find the value of n (the number of books that must be sold to break even).

kropot72 · Answer

@username3 Do you know how to solve the equation?

anonymous · Answer

ya @kropot72