Question

the population of a village was 20000 two years ago, it increased by 10% during first year but decreased by 10% in the second year, find the population at the end of 2 years

Answer 1

Answer:

19,800 will be the population at the end of 2 Years.

Step-by-step explanation:

Increased value by 10%=

                                   Percentage increased÷100×Total No.of People

                               ∵  10÷100×20,000

                               =   2000

∵ People in First year were 20,000+2000=22,000

Population decreased in second Year=

                                                                    10÷100×22,000

                                                                 = 2200

∵ Population at the end of 2 years will be = 22,000-2200

                                                                        = 19,800 Ans.