He needs 10*2=<<10*2=20>>20 pounds of noodles

That means he needs to buy 20-4=<<20-4=16>>16 pounds of noodles

So he needs to buy 16/2=<<16/2=8>>8 packages

# Answer

8
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
8
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?
train