Answer:
1037300
Step-by-step explanation:
Given: Number of people under the age of 20 is 290444
Also given 290444 represent 28 % of the total population.
Lets take x as total population of fairfax county.
Now, [tex]\frac{28\times x}{100} = 290444[/tex]
we will now multiply both side by 100
⇒ [tex]28\times x = 290444\times 100[/tex]
Next divide both side by 28
⇒ [tex]x = \frac{290444\times 100}{28} = 1037300[/tex]
∴ Total population of fairfax county is 1037300.
