The ratio of the number of big dogs to the number of small dogs at a pet show is 3:17. There are 80 dogs, in total, at this pet show. How many big dogs are there?
(A) 12
(B) 68
(C) 20
(D) 24
(E) 6
The ratio of the number of big dogs to the number of small dogs at a pet show is 3:17. There are 80 dogs, in total, at this pet show. How many big dogs are there?
(A) 12
(B) 68
(C) 20
(D) 24
(E) 6

## Solution

Since the ratio of the number of big dogs to small dogs is 3:17 this implies that there are 3 large dogs in each group of 20. Since there are 80 dogs, there are four groups of 20 . This means that there are $3 \times 4$ or 12 large dogs.

ANSWER: (A)