The population of a town increases by 20 % every year. if its present population is 16000 find its population 2 years ago
Answers
Answer:
The population of a town increases by 20% every year. If it's present population is 216,000, what is it's population after 2 years and 2 years ago?
Friends….!
The population of a town increases by 20% every year. If it's present population is 216,000, what is it's population after 2 years
Present population : 216,000
Increase per year = 20%
Increase in 1st year = 20/100 × 216000= 216000/5 = 43200
Population at end of 1st year after 20% increase = 216000 + 43200 = 259200
Increase during 2nd year = 20/100 × 259200 = 259200/5 = 51840
Population at end of 2nd year after 20% increase = 259200 + 51840 = 311040
In two years the population will be 311040
Population 1 year before - less 20% increase
80/100 × 216000 = 2160 × 80 = 172800
Population 2 years before - less 20% increase
80/100 × 172800 = 80 × 1728 = 138240
2 years before the population was 138240
Answer :The population after two years will be 138240
Answer:
The town' s present population is 16000 and it increases by 20 % every year.
Therefore 2 years ago;
its population will be 16000-40% = 9600
Step-by-step explanation:
Since 2 years ago is given
Therefore, -20+(-20) = -20-20=-40%
I hope it may help yoh!!!