Question

If population of a country increases by 2% per
year. After 35 years it will become double than
after how much time it will be 10 times of
initial
(1) 145 years (2) 115 years
(3) 85 years
(4) 55 years
​

Answer 1

(1)145 years as initial is double so 10 times will be 5 times its initial