Question

When the earth's population reached 6.45 billion, the annual/yearly increase was 1.14%. How many people increased per hour?

Option 1: 10,800 people
Option 2: 14,400 people
Option 3: 8,640 people
Option 4: 12,960 people

Answer 1

To calculate the hourly increase in population when it reached 6.45 billion with a yearly increase of 1.14%, multiply the population by the growth percentage, then divide by days and hours to find that approximately 8,640 people are added per hour.

Step-by-step explanation:

The student has asked to calculate the hourly increase in population when the Earth's population reached 6.45 billion, with an annual/yearly increase of 1.14%. To find the number of people increased per hour, we follow these steps:

1. Calculate the annual increase by multiplying the population (6.45 billion) by the growth rate (1.14%).
2. Convert the annual increase to a daily increase by dividing by the number of days in the year (365).
3. Finally, convert the daily increase to an hourly increase by dividing by the number of hours in a day (24).

Now let's do the math:

Annual Increase = 6.45 billion * 1.14% = 73.53 million people

Daily Increase = 73.53 million / 365 ≈ 201,450 people per day

Hourly Increase = 201,450 / 24 ≈ 8,394 people per hour

Thus, the closest option to the exact calculation is:

Option 3: 8,640 people