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A candy maker makes two sizes of candies. Using the smaller size, a full jar will contain 120 pieces of candy. Using the larger candies a jar will contain 80 pieces of candy. The candy maker has a strict rule that no jars will contain a mix of small and large candies. If a store has room for 15 jars and they want 1560 total pieces of candy, how many jars will contain smaller candies?92412

Question

A candy maker makes two sizes of candies. Using the smaller size, a full jar will contain 120 pieces of candy. Using the larger candies a jar will contain 80 pieces of candy. The candy maker has a strict rule that no jars will contain a mix of small and large candies. If a store has room for 15 jars and they want 1560 total pieces of candy, how many jars will contain smaller candies?92412

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Solution

Vamos resolver o problema passo a passo.

  1. Definimos as variáveis:

    • x x = número de potes com balas pequenas.
    • y y = número de potes com balas grandes.
  2. Sabemos que o total de potes é 15: x+y=15 x + y = 15

  3. Sabemos que o total de balas é 1560: 120x+80y=1560 120x + 80y = 1560

  4. Resolvemos o sistema de equações. Primeiro, isolamos y y na primeira equação: y=15x y = 15 - x

  5. Substituímos y y na segunda equação: 120x+80(15x)=1560 120x + 80(15 - x) = 1560

  6. Simplificamos a equação: 120x+120080x=1560 120x + 1200 - 80x = 1560

  7. Combinamos os termos semelhantes: 40x+1200=1560 40x + 1200 = 1560

  8. Subtraímos 1200 de ambos os lados: 40x=360 40x = 360

  9. Dividimos ambos os lados por 40: x=9 x = 9

Portanto, o número de potes com balas pequenas é 9.

This problem has been solved

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