A set of 7 spoons costs $21, so one spoon from the set costs 21 / 7 = $<<21/7=3>>3.

So if sold separately, 5 spoons would cost 5 * 3 = $<<5*3=15>>15.

# Answer

15
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A set of 7 spoons costs $21. If each spoon would be sold separately, how much would 5 spoons cost?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
15
A set of 7 spoons costs $21. If each spoon would be sold separately, how much would 5 spoons cost?
train