The population of a town is 15000. If the population increases by 15% in the first year, by 25% in the second year and due to pollution it decreases by 6% in the third year, what will be its population after 3 years?(Round off number in answer)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 20269.
Let's calculate the population year by year:
Year 1:
Increase: 15% of 15000 = 2250
Population after 1 year: 15000 + 2250 = 17250
Year 2:
Increase: 25% of 17250 = 4312.5
Population after 2 years: 17250 + 4312.5 = 21562.5
Year 3:
Decrease: 6% of 21562.5 = 1293.75
Population after 3 years: 21562.5 - 1293.75 = 20268.75
Rounding off to the nearest whole number, the population after 3 years will be approximately 20269.