Question

During last year Adam's height increased from 125 cm to 135 cm. By how many percents did it change?

Answer 1

he increase from 125cm to 135cm

first step :

`135 - 125 = 10cm`

second step :

percents he change is

`(10 * 100\%)/( 125) = 8\%`

Answer 2

= 8% increase

Explanation:

The percent change is given by

percent change = (new - old)/old *100 %

= (135-125)/125 * 100%

=10/125 *100%

=.08 * 100%

= 8% increase