HTF Company has two offices, one in Chicago and one in Atlanta. During November, the Chicago office reported a contribution margin $79,000; traceable fixed costs of $31,000; and had variable costs equal to 80% of the sales in the Chicago office. During November, the Atlanta office had a segment margin of $99,000 and traceable fixed costs of $69,000. HTF Company as a whole had total sales of $672,000 and reported a net income of $30,000 in November. Calculate the variable costs reported by the Atlanta office in November