a salesperson earns ​$108 selling ​$1800 worth of television sets. What is the commission​ rate?

To calculate the commission rate, we need to divide the commission earned ($108) by the total sales ($1800) and then multiply by 100 to express it as a percentage.

Commission Rate = (Commission Earned / Total Sales) * 100

Substituting the given values:
Commission Rate = (108 / 1800) * 100

Calculating:
Commission Rate = 0.06 * 100

Simplifying:
Commission Rate = 6

Therefore, the commission rate is 6%.