Let’s say there are 6 frogs and 2 crabs in a pond. We can compare the number of frogs to the number of crabs in two different ways:
- How many more frogs than crabs are there? or How many fewer crabs than frogs are there?
The answer to both the questions is same i.e. 6-2=4. There are 4 more frogs than crabs; or there are 4 crabs less than the number of frogs.
Here we have used subtraction for comparing.
- There is another way of comparing. We can also say that the number of crabs are one third the number of frogs.
Such a comparison by division is called ratio.
Number of crabs: No of frogs =1:3
We can also say that the number of frogs is thrice the number of crabs.
