Problem 14: MIX AND YIELD VARIANCE Production of each unit of 001 requires 8 lbs. of B at a cost of P9 per lb. and 4 lbs. of X at P11.20 per Ib. However, for production of 1,000 units of 001 10,000 Ibs. were used, 75% of which was for material B at a cost of P8 per lb. for B and p9 per lb. for X Required: Compute the material price, mix, and yield and quantity variance