Question

There are thirty-nine pets at the pet shop where Delia works. There are two times as many mammals as reptiles in the store. How many reptiles are there at the pet store?A.26B.25C.13D.12

Answer 1

Let the number of reptiles be x.

If there are twice as many mammals as reptiles, then the number of mammals will be:

`x*2=2x`

The total number of pets in the store is 39. Therefore, we have that:

`x+2x=39`

Solving, we have:

`\begin{gathered} 3x=39 \\ x=(39)/(3) \\ x=13 \end{gathered}`

The correct option is OPTION C.