Respuesta :
300 divided by 15 is 20, so he needs to sell 20 books total to get the 300.
60 divided by 15 is 4, so hes already sold 4 books.
20-4=16
He needs to sell 16 more coupon books to reach his goal
60 divided by 15 is 4, so hes already sold 4 books.
20-4=16
He needs to sell 16 more coupon books to reach his goal