Question

Answer to this question

Answer 1

Answer:

B) 20%

Step-by-step explanation:

Using the information given in the problem, the ratio of cats to dogs is 7:3 and the ratio of birds to dogs is 5:6.  In order to find the total ratio of all three animals, you need to compare the ratios given:

Cats: Dogs  is 7:3 and Birds: Dogs is 5:6

Since the ratio of Dogs increases from 3 to 6 in the two ratios, this is a factor of '2'.  We would need to also increase the amount of Cats by a factor of '2' to compare all three animals: 7 x 2 = 14.

The overall ratio of all three animals is:

Cats: Birds: Dogs = 14:5:6  

When we add 14 + 5 + 6 = 25, we can then take the number of birds in the ratio divided by the total number of animals to get a percent of birds at the store:

$\frac{5}{25}=0.2*100=20%$