SOLUTION: The ratio of cats to dogs is 4 to 5. If there are 20 dogs, how many cats are there?

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Question 1017840: The ratio of cats to dogs is 4 to 5.
If there are 20 dogs, how many cats are there?
Answer by Edwin McCravy(20065) About Me  (Show Source):
You can put this solution on YOUR website!
The ratio of cats to dogs is 4 to 5. 
C:D = 4:5

Write the ratios as fractions:

C%2FD%22%22=%22%224%2F5

If there are 20 dogs,...
Substitute D = 20

C%2F20%22%22=%22%224%2F5

Cross multiply:

5C%22%22=%22%2280

Divide both sides by 5

C%22%22=%22%2216

Edwin