hnava
hnava hnava
  • 01-12-2015
  • Mathematics
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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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beoshts beoshts
  • 01-12-2015
i would say that it should cost 60 dollars
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WafaAngel WafaAngel
  • 01-12-2015
The answer is $60 beacause 3x20=60
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