Question

Joe bought 24 books at 3 for $5.and had $2 left.how much money did he has frist

Answer 1

24/3 = 8 sets of books at $5 each.
That's $40

so, Joe started with $42

Answer 2

Ryan bought 3 similar books and a magazine. He paid $30 to the cashier and received $5 change.if the magazine cost twice as much as each book,find the cost of the magazine.