Respuesta :

She bought 3 necklace and bracelet sets

Step-by-step explanation:

The given is:

  • Selena spends $53.94 to buy a necklace and bracelet set for each of her friends
  • Each necklace cost $9.99
  • Each bracelet cost $7.99

We need to find how many necklace and bracelet sets she bought

Assume that the number of necklace and bracelet set is x

∵ Selena bought x necklace and a bracelet sets

- Each set contains a necklace and a bracelet

∵ Each necklace cost $9.99

∵ Each bracelet cost $7.99

∴ The cost of one set = (9.99 + 7.99)

∵ She spent on them $53.94

- Add the cost of a necklace and the cost of a bracelet and

  multiply the sum by x  and then equate the product by 53.94

∴ (9.99 + 7.99)x = 53.94

∴ 17.98 x = 53.94

- Divide both sides by 17.98

∴ x = 3

She bought 3 necklace and bracelet sets

Learn more:

You can learn more about the word problems in brainly.com/question/10557938

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