Population Growth and Percent Increase Flashcard

Front

What is percent increase?

Back

Percent increase is a measure of how much a quantity has grown relative to its original amount, expressed as a percentage. It is calculated using the formula: ((New Value - Old Value) / Old Value) * 100.

Front

How do you calculate percent increase?

Back

To calculate percent increase, subtract the old value from the new value, divide the result by the old value, and then multiply by 100.

Front

If a product's price increases from $50 to $65, what is the percent increase?

Back

25%.

Front

What is the formula for calculating percentage of a part to a whole?

Back

Percentage = (Part / Whole) * 100.

Front

In a survey of 500 respondents, if 120 prefer a certain brand, what percentage prefer that brand?

Back

24%.

Front

What is the population growth rate?

Back

The population growth rate is the rate at which the number of individuals in a population increases over a specific period, usually expressed as a percentage.

Front

How do you calculate the percent increase in population?

Back

Percent increase in population = ((New Population - Old Population) / Old Population) * 100.

Front

If a town's population increases from 25,000 to 30,000, what is the percent increase?

Back

20%.

Front

What is the Rule of 70?

Back

The Rule of 70 is a formula used to estimate the number of years required to double the size of a population or investment at a constant growth rate. It is calculated by dividing 70 by the annual growth rate.

Front

If a city has a growth rate of 3.5%, how long will it take to double its population?

Back

Approximately 20 years.