Fitness Fanatics is a regional chain of health clubs. The managers of the clubs, who have authority to make investments as needed, are evaluated based largely on return on investment (ROI). The company's Springfield Club reported the following results for the past year:

Sales:790,000

Net operating income: 18,960

Average operating assets: 100,000

Assume that the manger of the club is able to reduce average operating assets by 50,000 without any change in sales or net operating income. What would be the clubs return on investment (ROI)?