Miller Toy Company manufactures a plastic swimming pool at its Westwood Plant. The plant has been experiencing problems as shown by its June contribution format income statement below: Contains direct materials, direct labor, and variable manufacturing overhead. Janet Dunn, who has just been appointed general manager of the Westwood Plant, has been given instructions to "get things under control." Upon reviewing the plant's income statement, Ms. Dunn has concluded that the major problem lies in the variable cost of goods sold. She has been provided with the following standard cost per swimming pool: *Based on machine-hours. During June, the plant produced 3,000 pools and incurred the following costs: a. Purchased 16,100 pounds of materials at a cost of $275 per pound. b. Used 10.900 pounds of materials in production. (Finished goods and work in process inventories are insignificant and can be ignored.) c. Worked 2,400 direct labor-hours at a cost of $7.50 per hour. d. Incurred variable manufacturing overhead cost totaling $6,660 for the month. A total of 1,800 machine-hours was recorded. 1a. Compute the following variances for June, materials price and quantity variances. 1b. Compute the following variances for June, labor rate and efficiency variances. 1c. Compute the following variances for June, variable overhead rate and efficiency variances. (Do not round your intermediate calculations. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.) Summarize the variances that you computed in requirement 1 by showing the net overall favorable or unfavorable variance for the month. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable, and "None" for no effect (i.e., zero variance). Input all amounts as positive values.)