how would you write a real world problem that models the following equation? 0.08x = 0.06x + 140?

A company is considering two different payment structures for its employees. One option is for employees to receive a base salary of $140 per week plus 8% commission on all sales made. The other option is for employees to receive a base salary of $140 per week plus 6% commission on all sales made. How much in sales would an employee need to make in order for the two payment structures to be equivalent?