A farmer has 2 cats and 5 dogs. Write down the ratio of cats to dogs and dogs to cats.
Cats : Dogs
Dogs : Cats
Now try this question:
The same farmer also has 85 sheep and 15 cows. Write down the ratio of cows to sheep in its simplest form.
cows : sheep
and are both divisible by 5
A ratio is used to compare two quantities which are measured in the same units.