Answer:
Their are 18 number of purebreds
Explanation:
An animal shelter has 2 purebred Labradors among the 81 dogs available for adoption. It is known that 7/9 of the dogs are mongrels .The number of purebreds can be computed below.
The number of purebreds Labrador available for adoption = 2 purebred
The total number of dogs = 81 dogs
7/9 of the dogs are mongrels. This means 7/9 × 81 = 567/9 = 63
The number of mongrels = 63
The number of purebreds = 81 - 63 = 18
Their are 18 number of purebreds