A firm has two inputs: X and Y. The firm understands these inputs to be substitutable. The firm's standard mix is 1 unit(s) of input X for every 10 unit(s) of input B. Input X costs $25 per unit Input Y costs $10 per unit The firm's actually used 4,000 total input units, with 1,000 units of input X and 3,000 units of input Y. What is the firm's mix variance for these inputs? NOTE: only input a number, without indicating favorability (for simplicity, I've made sure that the relevant variance equation leads to a positive number). Round final answer to cents if necessary