Question

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?

Answer 1

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:

`\begin{gathered} (9)/(20)=(x)/(30) \\ 30((9)/(20))=x \\ x=13.5 \end{gathered}`

30 pounds are equal to 13.5kg.