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Three copies of a book cost $20. Use equivalent ratios to find the cost of nine copies of the book.
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Three copies of a book cost $20. Use equivalent ratios to find the cost of nine copies of the book.

User Kirps
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5 votes
The answer is $60 beacause 3x20=60
User Belle
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i would say that it should cost 60 dollars
User Resa
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