Question: A set of 7 spoons costs $21. If each spoon would be sold separately, how much would 5 spoons cost? Think carefully first, then make a decision:
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A set of 7 spoons costs $21, so one spoon from the set costs 21 / 7 = $3. So if sold separately, 5 spoons would cost 5 * 3 = $15. So the answer is 15.
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