The 33 children ate a total of 33 * 10 = <<33*10=330>>330 apples.

There were 450 - 330 = <<450-330=120>>120 apples left for the adults to eat.

If every adult ate 3 of the 120 apples left, then there were 120 / 3 = <<120/3=40>>40 adults in the family.

# Answer

40
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Bob picked 450 apples for his entire family to eat. There are 33 children in his family, and each of them ate 10 apples. If every adult ate 3 apples apiece, how many adults are in his family?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
40
Bob picked 450 apples for his entire family to eat. There are 33 children in his family, and each of them ate 10 apples. If every adult ate 3 apples apiece, how many adults are in his family?
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