Question

The population of a town increases every year by 2% of the population at the beginning of that year.The number of year by which the the total increase of population be 40% is

Answer 1

The no. of years=40/2=20
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Answer 2

here yrs answer so I hope that you must be getting yr answer
rate is 2%
time we have to find
u can calculate it by finding the compound interest formula