To determine 22% of Margo's paycheck of $2500, you can set up the proportion as follows:
\[ \frac{22}{100} = \frac{x}{2500} \]
To find \( x \), the amount Margo will save each month, multiply both sides by 2500:
\[ x = \frac{22}{100} \times 2500 \]
Calculating \( x \):
\[ x = 0.22 \times 2500 = 550 \]
Margo will save $550 each month.
Now, to find out how much money she will have saved after a year (12 months), multiply her monthly savings by the number of months:
\[ \text{Total savings} = 550 \times 12 = 6600 \]
So, after a year of saving, Margo will have saved $6600.