So we know Ebony spends $450 on rent. This is out of a total $2000 that she earns.
so we have a fraction to start with:
450/2000
Now the 2000 is what we would call 100% of her income, so we can say:
450/2000 = /100
Now we don't know what percent 450 represents, so we can put a variable in that space. It is the number we are trying to find out:
450/2000 = x/100
This creates an equivalent fraction with a variable.
If you're not sure how to find the value for variables in this situation, here's an explainer video with the different methods:
But we're going to do something called cross multiplication. Here's how it works:
450/2000 = x/100
2000x = 450*1002000x = 45000
2000x/2000 = 45000/2000
x = 22.5
And there you have it!
Her rent is equal to 22.5% of her income.