Q. The population of a city decreases by 20% in one year and increases by 25% in the next year. Compared to the original population, the final population is:
β
Correct Answer: (B)
No change
Explanation: Assume the population is 100. After a 20% decrease it becomes 80. Increasing 80 by 25% gives 100. Hence, there is no overall change.
Explanation by: Mr. Dubey
Assume the population is 100. After a 20% decrease it becomes 80. Increasing 80 by 25% gives 100. Hence, there is no overall change.