I am not sure about this problem
Find four large cities around the world and an approximate
percentage rate of population growth for the countries in
which the cities are located. Estimate the population in
each of the four cities in 25 yr.
present population * (1 + percent per year over 100)^25
To solve this problem, you need to follow these steps:
1. Identify and select four large cities around the world.
- You can choose cities like New York City, Tokyo, Mumbai, and Sao Paulo, which are known for their large populations.
2. Find the countries in which the selected cities are located.
- New York City is located in the United States.
- Tokyo is located in Japan.
- Mumbai is located in India.
- Sao Paulo is located in Brazil.
3. Determine the approximate percentage rate of population growth for each country.
- Research population growth rates for each country.
- You can find this information in various sources such as government websites, official data, or reputable statistical databases.
- For example, let's say the United States has a population growth rate of 0.7% per year, Japan has 0.2%, India has 1.1%, and Brazil has 0.8%.
4. Calculate the population of each city in 25 years.
- Using the population growth rate and the current population for each city, you can estimate the population in 25 years.
- Take into account that population growth rates can be subject to change and may not remain constant over time.
- Let's assume the current population of New York City is 8.4 million, Tokyo is 14 million, Mumbai is 20 million, and Sao Paulo is 12 million.
- Multiply the current population of each city by the population growth rate for their respective countries, and then multiply it by the number of years (25).
- For example, if the population growth rate of the United States is 0.7% per year and the current population of New York City is 8.4 million, you can calculate the population in 25 years by multiplying: 8.4 million * (1 + 0.7%)^25.
5. Repeat step 4 for each city, using the respective population growth rate and current population for each country.
6. Summarize and record the estimated population of each city in 25 years based on your calculations.
Remember to regularly check for updated population growth rates as they may change over time. Additionally, keep in mind that these estimations are based on assumptions and are subject to various variables.