# There are 172 South American animals in the Springdale Zoo. That is 45 more than half the number of African animals in the zoo. How many African animals are in the zoo?

Aug 3, 2018

$254$

#### Explanation:

$172 = s = 45 + \frac{a}{2}$

$127 = \frac{a}{2}$

$254 = a$