In attempting to solve the system of equations y 3x 2 and 6x 2y 4, John graphed the two equations on his calculator. Because he
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Answer: There are 75 books.
Price of each book = $4.
Step-by-step explanation:
Let x = Number of books in the box.
Then as per given,
Cost of x books = $300
Cost of one book =
Books left after giving 15 of them = x-15
Selling price of (x-15) books= $330
Selling price of one book =
Profit on each book= $1.50
Profit = selling price - cost price
Number of books cannot be negative.
So, there are 75 books.
Price of each book =
So price of each book = $4.