Answer:
Salesman's commission 4% of total monthly sales.
Explanation:
A sneaker store salesman had $4,125 in total monthly sales last month.
He made $165 in commission from those sales.
Suppose, it is x% of the total sale.
So, x% of $4125 will be,

According to the question it is equal to $165, so




Therefore, salesman's commission 4% of total monthly sales.