Lynbrook, Inc. recently developed a new product line called Mammoth. As the Controller of Lynbrook you created a standard cost system to monitor and control costs. The cost system you established has the following standards for one unit of Mammoth: Standard Quantity Standard Price or Standard Rate Cost Direct Material Direct labor Variable manufacturing overhead 1.5 pounds $ 6.00 per pound 0.6 hours $ 12.00 per hour 0.6 hours $ 2.50 per hour $ 9.00 7.20 1.50 $ 17.70 During June, the company recorded this activity related to production of Mammoth: a. The company produced 3,000 units during June. b. A total of 8,000 pounds of material were purchased at a cost of $46,000. c. There was no beginning inventory of materials; however, at the end of the month, 2,000 pounds of material remained in ending inventory. d. The company employs 10 persons to work on the production of Mammoth. During June, they each worked an average of 160 hours at an average rate of $12.50 per hour. e. Variable manufacturing overhead is assigned to Mammoth on the basis of direct labor-hours. Variable manufacturing overhead costs during June totaled $3,600. The company's management is anxious to determine the efficiency of the Mammoth production activities. Required: 1. For direct materials: a. Compute the price and quantity variances. b. The materials were purchased from a new supplier who is anxious to enter into a long-term purchase contract. Would you recommend that the company sign the contract? Explain. 2. For labor employed in the production of Mammoth: a. Compute the rate and efficiency variances. b. In the past, the 10 persons employed in the production of Mammoth consisted of 4 senior workers and 6 assistants. During June, the company experimented with 5 senior workers and 5 assistants. Would you recommend that the new labor mix be continued? Explain. 3. Compute the variable overhead rate and efficiency variances. What relation can you see between this efficiency variance and the labor efficiency variance?