Question

The total population of a village increased from $18,000$ to $22,500$ in a decade. The average percentage increase of population per year of that village is:

Answer 1

Population increase in $10$ years $=(22500-18000)=4500$.

Increase % $=\frac{4500}{18000}\times 100\%$ $=25\%$

Required average (per year) $=\frac{25}{10}\%$ $=2.5\%$