Q-9: Automobile Company produces a single product. Variable manufacturing overhead is applied to products on the basis of direct labor-hours. The standard costs for one unit of product are as follows: Direct material: 6 ounces at $0.50 per ounce.... ..... $3 Direct labor: 1.8 hours at $10 per hour... ... 18 Variable manufacturing overhead: 1.8 hours at $5 per hour.. .....9 Total standard variable cost per unit. ..... $30 During June, 2,000 units were produced. The costs associated with June's operations were as follows: Material purchased: 18,000 ounces at $0.60 per ounce .... ... $10,800 Material used in production: 14,000 ounces. Direct labor: 4,000 hours at $9.75 per hour.. ... $39,000 Variable manufacturing overhead costs incurred .. ... $20,800 Required: Compute the following variances: direct materials price and usage variance, direct labor rate & efficiency variance, and Variable manufacturing overhead spending & efficiency variances