Respuesta :

it grew about i dont know if im right but ill say  27%

Percent increase is a percent change that describes an increase in quantity

To determine percent increase we first find the amount of change

It is given:A tree grew from 4ft to 12ft in 3 years .

Amount of change =12-4=8 ft.

We use proportion to find percent increase.

[tex] \frac{percent Increase }{100} =\frac{Amount of change }{Original amount } [/tex]

Or ,[tex] \frac{Percent Increase }{100} =\frac{8}{4} [/tex]

Cross multiplying we have:

4 ( percent Increase )= 800

Dividing by 4 we have Percent change = 200

Percent Increase = 200%.