Question

find population of city after 2 year which is at present 12 lakh if the rate of increase 10%

Answer 1

14 lakh 20 thousand ^_^^_^^_^^_^^_^^_^^_^^_^^_^

Answer 2

here is your answer

population =1200000
time = 2years
rate % =10 %

so lets solve by the following formula :

$a = p \times (1 \ + \frac{r}{100} {})^{2}$
where p = principal here as population and a is amount but here population after 2 years and r us rate percent


$1200000(1 \ + \frac{10}{100} {)}^{2}$

$1200000 ( \frac{11}{10} ) {}^{2}$
$1200000 \times \frac{11}{10} \times \frac{11}{10}$


= 1452000

so the population after two years will be 1452000.



hope it helps you