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  • 15-12-2022
  • Mathematics
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A stamp collection consists of 3c 12c and 15c stamps. The number of 3c stamps is five times the number of 12c stamps. The number of 15c stamps is four less than the number of 12c stamps. The total value of the stamps in the collection is $3.18. What is the number of 15c stamps in the collection?

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