Question

The population of the United States grew from 76 million in 1900 to 300 million in 2006, what is the percent change?

Answer 1

See the entire solution process below:

Explanation:

The formula for calculating the percent change in a value between two points in time is:

`p = (N - O)/O *100`

Where:

`p` is the percent change - what we are solving for in this problem.

`N` is the New Value - 300 million in this problem.

`O` is the Old Value - 76 million in this problem.

Substituting and solving for `p` gives:

`p = (300 - 76)/76 *100`

`p = 224/76 *100`

`p = 22400/76`

`p = 294.7` rounded to the nearest tenth.

Between 1900 and 2006 there was a 294.7% increase in the population of the United States.