
Concept explainers
Last year, the population of South Skratchankle was 48,000. This year, the population is 60,000. By what percent did the population increase? Explain how to solve the problem two different ways.

To calculate: The increase in population increase.
Answer to Problem 1P
The population increases by
Explanation of Solution
Given information:
The population of south Skratchanklewas
Calculation:
First way to obtain the percentage is to calculate what percent of
Use the below formula to obtain the percentage as,
Here,
Substitute
Therefore, the percent
The increase in percentage is,
Therefore, the increase in percentage is
Second way is to calculate the change of increase, so the change of increase is obtained if original population is subtracted from new population.
So, the change of increase is calculated as,
The percentage of change is calculated as,
Therefore, the change in population increase is
Conclusion:
Thus, the population increases by
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