The population of a town is 10,000. It increases by 10% during the first year, decrease by 20% during the second year and increase by 30% during the third year. What will be the population after three years?

11440

10% = \(\frac{1}{10}\)   ,   20% = \(\frac{1}{5}\)  ,  30% = \(\frac{3}{10}\)

(Ist Year)     ⇒  10       :      11

(IInd Year)   ⇒   5       :       4

(IIIrd Year)  ⇒  10      :       13

                   ---------------

                    500       :     44×13     (After 3 years)

                     ↓×20               ↓×20

                  10000             11440  Ans

                 (given)