The population of a town is 8,000. It increases by 20% during the first year, decrease by 10% during the second year and increase by 40% during the third year. What will be the population after three years?

12096

20% = \(\frac{1}{5}\)   ,   10% = \(\frac{1}{10}\)  ,  40% = \(\frac{2}{5}\)

(Ist Year)     ⇒    5       :      6

(IInd Year)   ⇒   10      :       9

(IIIrd Year)  ⇒     5      :       7

                      ------------------

                        250    :     378     (After 3 years)

                       ↓×32          ↓×32

                      8000          12096  Ans.

                    (given)