Question

The population of a town increases by 20 % every year. If the population is 21600 in
year then what would have been its population before 3 years?
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Answer 1

Answer:

20% of population= (20/100*21600)=4320

So 4320 population increase every year

Before 3 yrs the population was=21600-(4320×3)=21600-12960=8640