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A veterinarian needs to know an animal's weight in kilograms. If 20 pounds is about 9 kilograms and a dog weighs 30 pounds, use a ratio table to find the dog's weight in kilograms. Explain your answers. how do you come up with the ratio?

Respuesta :

To determine how many kg does a 30-pound dog, considering that we know that 20 pounds are equal to 9 kg, you can use cross multiplication.

20pounds ____ 9kg

30pounds ____ xkg

The kg/pound proportion is the same for both rates so that:

[tex]\begin{gathered} \frac{9}{20}=\frac{x}{30} \\ 30(\frac{9}{20})=x \\ x=13.5 \end{gathered}[/tex]

30 pounds are equal to 13.5kg.

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