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6 borrachas custam 6,60 Qual equação ajudaria a determinar o preço de 3 borrachas? Escolha 1 resposta: A (3)/(x)=( 6,60)/(6) B (3)/(6)=( 6,60)/(x) C (x)/(3)=(6)/( 6,60) D (x)/(3)=( 6,60)/(6) E Nenhuma das anteriores

Pergunta

6 borrachas custam 6,60
Qual equação ajudaria a determinar o preço de 3 borrachas?
Escolha 1 resposta:
A
(3)/(x)=( 6,60)/(6)
B
(3)/(6)=( 6,60)/(x)
C
(x)/(3)=(6)/( 6,60)
D
(x)/(3)=( 6,60)/(6)
E Nenhuma das anteriores

6 borrachas custam 6,60 Qual equação ajudaria a determinar o preço de 3 borrachas? Escolha 1 resposta: A (3)/(x)=( 6,60)/(6) B (3)/(6)=( 6,60)/(x) C (x)/(3)=(6)/( 6,60) D (x)/(3)=( 6,60)/(6) E Nenhuma das anteriores

Solução

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AndréMestre · Tutor por 5 anos

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D

Explicação

This question is asking for the equation that would allow us to determine the price of 3 erasers given that 6 cost $6.60. The correct equation would be (D) x/3 =$6.60/6. This equation is derived from the concept of ratios, where the price of the erasers is directly proportional to the number of erasers. In this case, we are trying to find the price of 3 erasers (x), so we set up the equation where the ratio of the number of erasers (3) to the unknown price (x) is equal to the ratio of the known price ($6.60) to the number of known erasers (6). Solving this equation will give us the price of 3 erasers.
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