Question

18. The population of a village increases by 5% every year. If the
population this year is 4200 then the population last year was?​

Answer 1

Answer:

5%*4200

5/100*4200

=210

Step-by-step explanation:

Answer 2

$\huge\frak\pink{answer}$

Given the population of a village increased at rate of 5 % every ten year 

and present population  after 20 years is 8820

Then present population  =8820÷(1+1005)2=105×1058820×100×100=8000