# What is 80% of 125?

Nov 30, 2016

80%" of "125 = 20

#### Explanation:

The word 'of' means multiply, as in 2 of 6 $= 2 \times 6 \text{ or } 6 + 6$

So 80% of 125 is the same as 80%xx125

The % sign is a unit of measurement worth $\frac{1}{100}$

So 80% $\to \frac{80}{100}$

Putting this all together and we have:

$\frac{80}{100} \times 125$

But $\frac{80}{100} = \frac{80 \div 2}{100 \div 2} = \frac{40}{50} = \frac{4}{5} \text{ }$ giving:

$\frac{4}{5} \times 125 \text{ "=" } \frac{4}{{\cancel{5}}^{1}} \times {\cancel{125}}^{5}$

$4 \times 5 = 20$

$\text{So "80%" of } 125 = 20$