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24 September, 21:38

Is $12 for 3 books; $28 for 7 books proportion

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  1. 24 September, 21:45
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    Yes, it is proportional. Every book is $4. 3 x 4 is 12, 7 x 4 is 28.
  2. 24 September, 21:59
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    12:3=4/1 is the porpotional 28:7=4 is the porpotional The porpotional for both of them is 4
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