It costs a publishing company 50,000 dollars to make books. The 50,000 is a fixed cost or a cost that cannot change. To help the publishing company sell the books, a marketing company charges 4 dollars for each book sold. If the company charges 9 dollars per book, how many books should they sell to break even?
Pick:	A) 100	B) 1000	C) 10000	D) 100000	E) None
Let C be the cost of producing and selling x books   Let R be the revenue made for selling x books   R = selling price of 1 book × number of books sold   R = 9x   C = fixed cost + variable cost   variable cost = fee charged for 1 book × number of books sold   variable cost = 4x   C = 50000 + 4x   R = C   9x = 50000 + 4x   9x - 4x = 50000 + 4x - 4x   5x = 50000   x = 10000 since 5 × 10000 = 50000   The break even point is to sell 10000 books.   Answer 10000
<result>C</result>
It costs a publishing company 50,000 dollars to make books. The 50,000 is a fixed cost or a cost that cannot change. To help the publishing company sell the books, a marketing company charges 4 dollars for each book sold. If the company charges 9 dollars per book, how many books should they sell to break even?