Lizzy: Tom decides to make lasagna with all his beef. It takes twice as many noodles as beef. He has 10 pounds of beef. He already has 4 pounds of lasagna noodles and the noodles come in 2-pound packages. How many packages does he need to buy?.
Me: Hmmm, let me think. I think this is the detailed solution:
He needs 10 * 2 = 20 pounds of noodles. That means he needs to buy 20 - 4 = 16 pounds of noodles. So he needs to buy 16 / 2 = 8 packages. Final answer: 8.