During the week ended April 27, the following activity took place:
14,800 lbs. of raw materials were purchased for inventory at a cost of $2.97 per pound. 2,000 cases of ?nished product were produced. 16,600 lbs. of raw materials were used. 11,600 direct labor hours were worked at a total cost of $121,800. $60,900 of actual variable overhead costs were incurred.
Required: Calculate each of the following variances and provide plausible explanations for the results: a. Price variance for raw materials purchased. b. Raw materials usage variance. c. Direct labor rate variance. d. Direct labor ef?ciency variance. e. Variable overhead spending variance. f. Variable overhead ef?ciency variance.