A graphic design studio offers custom design work for printed and electronic media. The studio expects to bill out 8,100 billable hours in one quarter. Design work for printed media typically makes up about 25% of total billable hours and revenue, while design work for electronic media makes up the rest. Design work for printed media is billed at $500 per hour, and design work for electronic media is billed at $350 per hour. Variable costs amount to 40% of the hourly rate for both.

During the latest quarter, 8,050 hours were actually billed out, with design work for printed media taking up 15% of all billings. What is the total sales mix variance?