Question

How do you write 45% as a fraction?

Answer 1

`9/20`

Explanation:

In the same way that when you are measuring a length in centimetres the units of measurement are shown as 'cm'. When counting proportions, if the % is used, it is likewise a unit of measurement. It is worth `1/100`

So 45% is the same as `45xx1/100`

This gives you `45/100 " "->" "(45-:5)/(100-:5) = 9/20`