672/4 = <<672/4=168>>168 balloons

168 * (1/2) = <<168*(1/2)=84>>84 balloons

Anya took 84 balloons home.

# Answer

84
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There were 672 balloons that were either green, blue, yellow, or red. They were divided into equal groups and then Anya took half of the yellow ones home. How many balloons did Anya take home?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
84
There were 672 balloons that were either green, blue, yellow, or red. They were divided into equal groups and then Anya took half of the yellow ones home. How many balloons did Anya take home?
train