Without the discount, each pair cost $10 so 3 pairs cost 3*$10 = $<<10*3=30>>30

With a discount of 10% on the total cost, she can pay only $30-($30*(10/100)) = $<<30-(30*(10/100))=27>>27

By buying 3 at once in order to get the discount, she can save $30-$27 = $3

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Stacy went to a store to buy some pairs of shorts. Each pair normally cost $10, but there's a discount of 10% on the total cost for people who purchase 3 or more pairs at once. How much can she save by buying 3 pairs at once as opposed to purchasing them individually at different times?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
3
Stacy went to a store to buy some pairs of shorts. Each pair normally cost $10, but there's a discount of 10% on the total cost for people who purchase 3 or more pairs at once. How much can she save by buying 3 pairs at once as opposed to purchasing them individually at different times?
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