what is variable overhead efficiency variance and net variance?

Miler 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: Flexible Budget Actual Sales (15,000 pools) 3625,000 $625.000 Variable expenses Variable cont of goods wolde 435,000 461,090 Variable selling expenses 20,000 20.000 Total variable expenses 55,000 DO Contribution margin 2000 DO Fixed expenses Manufacturing overhead 130,000 110,000 Selling and administrative 14.000 14.000 Total tixed expenses 2 000 000 Net operating Incon (losa) $6,000 $20,890) "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: Standard Standard Price Quantity or Standard Hours or Rate cost Direct materials 3.0 pounds $5.00 per pound $15.00 Direct labor 0.8 hours $16.00 per hour 12.80 Variable manufacturing overhead 0.4 hours. $ 3.00 per hour 1.20 Total standard cost per unit $29.00 Based on machine-hours. During June, the plant produced 15,000 pools and incurred the following costs: a. Purchased 60,000 pounds of materials at a cost of $4.95 per pound. b. Used 49,200 pounds of materials in production (Finished goods and work in process inventories are insignificant and can be c. Worked 11.800 direct labor-hours at a cost of $17.00 per hour. d. Incurred variable manufacturing overhead cost totaling $18,290 for the month. A total of 5,900 machine-hours was recorded