Question

The population density of Smallville ( 20 square miles) was 20.2 people per square mile. A decade later the population was 27.8 people per square mile. What was the increase in population?

Answer 1

Answer:

3.8%

Step-by-step explanation:

Total population 20×20.2=404

population after a decade= 20×27.8=556

so,icreasement of population is = (556-404)=152

Now,

in 10 years people increases 152

so,in 1 year=152/10 =15.2

Again,

on 404 increasement is 15.2

on 100 increasemet is 15.2×100/404

=3.8%(Ans.)

Is it right or not?