Question

hey there riyaz aly so I open a book of my childhood there is a question do it. ​

Answer 1

Answer:

Present population = 150000

Increase percent = 4 %

population at the end of the 1st year = 150000+ ( 150000 + 4 / 100 ) = 156000

Population at the end 2nd year = 4% of 156000 = 4 / 100 × 156000 = 6240

= 156000 + 6240 = 162240 (b)

Thus, the population after 2 years is 162240.

Answer 2

❥${\underline{\underline{\large{\mathtt{ANSWER:-}}}}}$

After 2 years,the population will be 162,240.

❥${\underline{\underline{\large{\mathtt{SOLUTION:-}}}}}$

•Given:-

• Present population of the town = 150000
• The population of the town increases 4% annually.

•To find:-

• The population after 2 years.

•Solution:-

Let the population after 2 years will be x .

We know,

★${\boxed{\sf{\green{Uniform\:rate\:of\: growth\:=\:p(1+\frac{r}{100})^n}}}}$

Where,

p = present population = 150000

r = rate of interest= 4%

n = time=2 years.

$\sf{After\:2\: years,\:the\: population\: will\:be = p(1+\frac{r}{100})^n}$

$\implies\sf{After\:2\: years,\:the\: population\: will\:be = 150000(1+\frac{4}{100})^2}$

$\implies\sf{After\:2\: years,\:the\: population\: will\:be = 150000(\frac{104}{100})^2}$

$\implies\sf{After\:2\: years,\:the\: population\: will\:be = 150000\times\frac{104}{100}\times\frac{104}{100}}$

${\red{\sf{\implies{After\:2\: years,\:the\: population\: will\:be =162,240}}}}$

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