Question: A gold coin is worth the same amount as 17 silver coins or 493 copper coins. Put the following in order from least valuable to most valuable: a book that costs 7 silver coins, a magical wand that costs 7 gold coins, and a chocolate frog that costs 7 copper coins.
Answer: chocolate frog, book, wang
Solution: We can tell that each silver coin is worth less than a gold coin because it takes more of them to have the same value as a gold coin. The copper coins are worth even less because it takes even more of them. Since each object costs the same number of coins but the coins are worth different amounts, the object that is valued in gold coins is worth the most, the object valued in silver coins is in the middle, and the object valued in copper coins is worth the least.
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