50 x 3/5 = <<50*3/5=30>>30 children are boys.

So, there are 50 - 30 = <<50-30=20>>20 children that are girls.

# Answer

20
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are 50 children at the party. Three-fifths of them are boys. How many of the children are girls?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
There are 50 children at the party. Three-fifths of them are boys. How many of the children are girls?
train