How do you write 45% as a fraction?

1 Answer
Oct 24, 2016

#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#