The present population of a city is 180000. If it increases at the rate of 8% per annum , It's population after 2 years will be ?

byAmlesh Mahato •March 27, 2021

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Solution:

⇨ Given

⇨p=180000

⇨ r = 8 %

⇨ n = 2 years

⇨ Population after 2 years will be

$\large A=p\left ( 1+\frac{r}{100} \right )^{n}$

$\large \Rightarrow A=180000\left ( 1+\frac{8}{100} \right )^{2}$

$\large \Rightarrow A=180000\left (\frac{100+8}{100} \right )^{2}$

$\large \Rightarrow A=180000\left (\frac{108}{100} \right )^{2}$

$\large \Rightarrow A=180000\times \frac{11664}{10000}$

$\large \Rightarrow A=18\times 11664$

$\large \Rightarrow A=209952$

Tags: Math-Class-8