It is given that Alexander earns 12% commission each week.
Last week, he sold $5300 worth of stocks.
The amount he made last week in commission was
![\begin{gathered} (12*5300)/(100) \\ =636 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/8eagohmd1d2c51813g30jc331f2zbi5rcw.png)
So, he made $636 last week in commission
He averages the same amount each week.
So, it is convenient to consider that he makes $636 in a week.
In 2011, there were 52 weeks.
So, the amount he made in 2011 is
![52*636=33072](https://img.qammunity.org/2023/formulas/mathematics/college/7i65mutfx5fhb3c1tvqs7ompgacyheysnj.png)
So, he made $33072 in the year 2011