The ratio of the rent ($600) to the income ($2700) is written as:
600 : 2700.
You need to reduce the ratio. Both 600 and 2700 are divisible by 3, and dividing them both by three, you get the following:
200 : 900.
This can be reduced further by dividing by 100.
2 : 9
So, Ang spends 2 dollars on rent for every 9 dollars he earns,
