He got 4*50=$<<4*50=200>>200

That means he was able to buy 200/20=<<200/20=10>>10 birds

Since each bird has 2 wings he got 10*2=<<10*2=20>>20 wings

# Answer

20
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
John decides to buy some birds.  He got 50 dollars from each of his 4 grandparents.  If each bird costs $20, how many wings did all the birds have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
John decides to buy some birds.  He got 50 dollars from each of his 4 grandparents.  If each bird costs $20, how many wings did all the birds have?
train