Question

The population of Delhi two years ago was $55000$. It increased by $12$% in the first year and decreased by $15$% in the second year. What was the population of town at the end of $2$ years.

Answer 1

Population after first year = $55000+\frac{12}{100}\times 55000$

$=55000\times \frac{112}{100}$

=61,600

Population after 2nd year = $61,000-\frac{15}{100}\times 61,600$

$=\frac{85}{100}\times 61,600$

=52,360