Answer:
A. a.Materials price variance = $21300 Favorable
b. Materials usage/quantity variance = $2,496 Unfavorable
B. a Labor rate variance = $2,816 Unfavorable
b. Labor efficiency variance = 3,960 Unfavorable
Step-by-step explanation:
A. a.Materials price variance = (Actual price - Standard Price) × Actual Quantity
= ($0.28 - $0.31) × 71,000
= $0.03 × 71,000
= $21,300 Favorable
b. Materials usage/quantity variance = (Actual Quantity Used- Standard Quantity) × Standard Price
= ((71,000 - 30,750) - 7 × 4,600) × $0.31
= (40,250 - 32,200) × $0.31
= 8,050 × $0.31
= $2,496 Unfavorable
B. a Labor rate variance = (Actual Rate - Standard Rate) × Actual Hour
= ($49,280 ÷ 7,040 - $6.60) × 7,040
= $0.40 × 7,040
= $2,816 Unfavorable
b. Labor efficiency variance = (Actual Hour - Standard Hour) × Standard Rate
= (7,040 - 1.4 × 4,600) × $6.60
= 600 × $6.60
= 3,960 Unfavorable