Question

Huntsville’s population grows from 25,000 to 28,000. What is the percent increase in Huntsville’s population?

How do you solve 3,000/ 25,000 without a calculator to still get 12%?

Answer 1

`\%increase = 12\%`

Explanation:

The formula to calculate the percentage of increase is:

`\% = (x_f-x_i)/(x_i)*100\%`

Where

`x_i` is the initial amount and
`x_f` is the final amount

So:

`\% = (28000-25000)/(25000)*100\%`

`\% = (3000)/(25000)*100\%`

You can write it as:

`\% = (3*1000)/(25*1000)*100\%`

This is:

`\% = (3)/(25)*100\%`

`\%increase = 12\%`