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tekilochka [14]
3 years ago
11

Tenho a seguinte escolha: ou compro 20 unidades de um produto com todo o dinheiro que tenho, ou compro apenas 14 unidades e aind

a me sobra um troco de R$ 30,00. Qual o valor unitário deste produto?
Mathematics
2 answers:
alexdok [17]3 years ago
7 0

Answer: The price for the product is R$5.

Step-by-step explanation: Suppose the unit price of the product is X.

T is all the money I have.

In the first option, 20 units spend all my money, so:

T = 20x

In the second option, if I buy 14 of it, I have a remaining of R$30, so:

T = 14.x + 30

To determine the unit valor:

20x = 14x + 30

20x - 14x = 30

x = \frac{30}{6}

x = 5

The product costs R$5.

Vitek1552 [10]3 years ago
5 0

Answer:

O valor unitário deste produto é de R$ 5.

Step-by-step explanation:

Ao comprar 14 unidades do produto, restam 30 Reais, ao comprar 20 unidades, não resta dinheiro, podemos afirmar que para comprar 6 unidades são necessários 30 Reais.

Portanto, para determinar o valor unitário do produto, devemos dividir os 30 Reais da troco pelas 6 unidades que não foram compradas.

Portanto, como 30/6 resulta em 5, esse é o valor unitário do produto. Cada produto vale 5 Reais.

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