Question

A zoo has 3 mammals for every 5 retiles if the zoo has 72 mammals how many reptiles does it have

Answer 1

120 reptiles

Step-by-step explanation:

The ratio of mammals to reptiles = 3: 5

Number of mammals =72

Let the number of reptiles = x

We therefore have that:

`(3)/(5)=(72)/(x)`

We solve the equation above for x.

`\begin{gathered} 3* x=72*5 \\ x=(72*5)/(3) \\ x=120 \end{gathered}`

There are 120 reptiles in the zoo.