Question : Due to a pandemic, the population of a city reduces at the rate of 2% per annum. What will be its total population after 2 years if the present population of the city is 45,000?
Option 1: 40538
Option 2: 44521
Option 3: 41568
Option 4: 43218
Correct Answer: 43218
Solution :
Initial population($P$) = 45,000
Rate($r$) = 2%
Time($t$) = 2 years
Population after 2 years = $P(1 - \frac{r}{100})^t$
= $45000\times (1 - \frac{2}{100})^2$
= $45000\times\frac{49}{50}\times\frac{49}{50}$
= $43218$
Hence, the correct answer is 43218.
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Get Updates Brochure
Your Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.
