Question

the population of a town is 8000. it decreases by the 10 % during the first year 15% during the second year and 20 % during the third year. what will be the population after 3 years ​

Answer 1

4400

Because.........

10+15+20=45

8000×45/100

=80×45

=3600

8000-3600=4400

Answer 2

first year population decreases by 800. no. of people now=7200

second year= 1080. no. of people now=6120

third year=  1236. no. of people now= 4944

therefore population after 3 years will be 4944