Ultra Shine Company manufactures a cleaning solvent. The company employs both skilled and unskilled workers. To produce one 55-gallon drum of solvent requires Materials A and B as well as skilled labor and unskilled labor. The standard and actual material and labor information is presented below: Standard: Material A: 30.25 gallons @ P1.25 per gallon Material B: 24.75 gallons @P2.00 per gallon Skilled Labor: 4 hours @ P12 per hour Unskilled Labor: 2 hours @ P7 per hour Actual: Material A: 10,716 gallons purchased and used @ P1.50 per gallon Material B: 17,484 gallons purchased and used @ P1.90 per gallon Skilled labor hours: 1,950 @ P11.90 per hour Unskilled labor hours: 1,300 @ P7.15 per hour During the current month Ultra Shine Company manufactured 500 55-gallon drums. 29. The total materials yield variance is 30. The total materials mix variance is