Computation of Variable Cost Variances The following information pertains to the standard costs and actual activity for Repine Company for September: Standard cost per unit Direct materials Direct labor Activity for September Materials purchased 3 units of material A x $8.00 per unit 2 units of material B x $4.00 per unit 2 hours x $15.00 per hour Material A 7,000 units x $7.80 per unit Material B 4,800 units x $4.50 per unit Materials used Material A 6,430 units Material B 3,950 units Direct labor used 4,100 hours x $15.50 per hour Production output 2,000 units There were no beginning direct materials inventories. (a) Determine the materials price and quantity variances. Material A Materials price variance $ 0 = $ Material B 0 0 0 Materials quantity variance (b) Determine the labor rate and efficiency variances. Labor rate variance $ 0 Labor efficiency variance $ 0 C