A salesperson earns a commission of $525 for selling $3500 in merchandise.

Find the commission rate. Write your answer as a percentage.

To find the commission rate, divide the commission by the amount of merchandise sold and multiply by 100 to convert to a percentage.

Commission rate = (commission / merchandise sold) * 100

Commission rate = ($525 / $3500) * 100

= 0.15 * 100

= 15%

Therefore, the commission rate is 15%.