First find the number of pieces left after Anne sweeps up: 60 pieces / 2 = <<60/2=30>>30 pieces

Then subtract the number her cat takes: 30 pieces - 3 pieces = <<30-3=27>>27 pieces

Divide that number by 3 to find how many pieces her boyfriend picks up: 27 pieces / 3 = <<27/3=9>>9 pieces

# Answer

9
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Anne drops a mirror and breaks it into 60 pieces. She sweeps up half of them, then her cat steals 3 pieces and her boyfriend picks up 1/3 of the remaining pieces. How many pieces does her boyfriend pick up?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
9
Anne drops a mirror and breaks it into 60 pieces. She sweeps up half of them, then her cat steals 3 pieces and her boyfriend picks up 1/3 of the remaining pieces. How many pieces does her boyfriend pick up?
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