Question: A large puzzle costs $15. A small puzzle and a large puzzle together cost $23. How much would you pay for 1 large and 3 small puzzles? Think carefully first, then make a decision:
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A small puzzle costs $23 - $15 = $8. Three small puzzles cost $8 x 3 = $24. So, 1 large and 3 small puzzles cost $24 + $15 = $39. So the answer is 39.
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