# How do you increase 40m by 30%?

Dec 12, 2016

40m increased by 30% is 52m

#### Explanation:

To increase 40 by 30% you need to add "30% of 40m" to the original 40m.

To calculate 30% 0f 40m we know "Percent" or "%" means "out of 100" or "per 100", Therefore 30% can be written as $\frac{30}{100}$.

When dealing with percents the word "of" means "times" or "to multiply".

Putting this together we can write:

$\frac{30}{100} \cdot 40 m = \frac{1200 m}{100} = 12 m$

Adding the 12m to the original 40m gives:

$40 m + 12 m = 52 m$