Over the course of a year, the population of chipmunks in boston increased from 300000 to 387000. what was the percent increase of the population of chipmunks? express your answer as a percent.

The percent increase of the population of chipmunks was 29%

Step-by-step explanation:

we know that

The population of 300,000 chipmunks represent the 100%

The increase of population is equal to

(387,000-300,000)=87,000 chipmunks

Using proportion find the percent increase

Let

x> the percent increase

300,000/100%=87,000/x

x=100*87,000/300,000

x=29%