Lizzy: John buys 3 spools of wire that are 20 feet each. It takes 4 feet to make a necklace. How many necklaces can he make?.
Me: Hmmm, let me think. I think this is the detailed solution:
He gets 3 * 20 = 60 feet of wire. So he can make 60 / 4 = 15 necklaces. Final answer: 15.