Chapter 12.7, Problem 47STP

To determine

To find the percentage growth of population over the 10 years.

Answer to Problem 47STP

34%

Explanation of Solution

Given:

Earlier population: 312,430

Current population: 418,270

Formula used:

  $\text{Percentage increase}=\frac{\text{New value}-\text{Initial value}}{\text{Initial value}}\times 100$

Calculation:

Using the above formula,

In this case New value is the current population and the Initial value is the Earlier population.

Substituting in the formula,

  $\begin{array}{c}\text{Percentage increase}=\frac{\text{418,270}-312,430}{\text{312,430}}\times 100\\ =\frac{105,840}{312,430}\times 100\\ =33.87\\ =34\end{array}$

Conclusion:

Therefore, after 10 years there is an increase in population of 34%.