The following is the standard cost card for Cortez Corp.'s only product: $16.00 ered $15.00 $4.50 Direct materials, 4 metres at $4.00 Direct labour, 5 hours at $10.00 Variable overhead, 1.5 hours at $3.00 Fixed overhead, 1.5 hours at $7.00 Standard cost per unit $10.50 $46.00 estion The company manufactured and sold 18,000 units of product during the year. A total of 70,200 metres of material was purchased during the year at cost of $4.20 per metre. All of this material was used to manufacture the 18,000 units. The company records showed no beginning or ending inventories for the year. The company worked 29,250 direct labour hours during the year at a cost of $9.75 per hour. Overhead cost is applied to products on the basis of direct labour hours. The denominator activity level (direct labour hours) was 22,500 hours. Budgeted fixed overhead costs as shown on the flexible budget were $157,500, while actual fixed overhead costs were $156,000. Actual variable overhead costs were $90,000 Required: a) Compute the direct materials price and quantity variances for the year. b) Compute the direct labour rate and efficiency variances for the year