Stammer Company Uses Three Materials in the Production of Their

Stammer Company uses three materials in the production of their product. The materials, A, B, and C, have the following standards:
Material Standard Mix Standard Unit Price Standard Cost
A 5,000 units $2.00 per unit $10,000
B 3,000 units 4.00 per unit $12,000
C 2,000 units 3.00 per unit $ 6,000
Yield 9,000 units
During April, the following actual production information was provided:
Material Actual Mix
A 40,000 units
B 20,000 units
C 10,000 units
Yield 60,000 units
Required:
Calculate the materials usage, mix, and yield variances.