Given
The population of a certain region grew from 261 million to 310 million.
we are to find the percentage increase
[tex]\frac{310-261}{261}\times\frac{100}{1}[/tex][tex]\begin{gathered} \frac{49}{261}\times\frac{100}{1} \\ \\ 0.187739\times100 \\ 18.8 \end{gathered}[/tex]The % of the increase is 18.8%
