show more detail on how to calculate the direct labor efficiency variance from these calculations: Answer: Cost Variance Analysis Direct Materials: Price Variance: $6,048 Efficiency Variance: ($5,760) Direct Material Cost Variance: $288 Direct Labor: Price Variance: ($25,600) Efficiency Variance: $108,800 Direct Labor Cost Variance: $83,200 Variable Overhead: Price Variance: ($8,900) Efficiency Variance: $27,200 Explanation: Direct Materials: Price Variance is calculated as (Actual Price - Standard Price) Actual Quantity. Here, it is (3.60 - 4.00) 15,120 = $6,048. Efficiency Variance is calculated as (Actual Quantity - Standard Quantity) Standard Price. Here, it is (15,120 - (2,280 6)) * 4 = -$5,760. Direct Material Cost Variance is the sum of Price Variance and Efficiency Variance, which is $6,048 - $5,760 = $288. Direct Labor: Price Variance is calculated as (Actual Rate - Standard Rate) Actual Hours. Here, it is (44 - 40) 6,400 = -$25,600. Efficiency Variance is calculated as (Actual Hours - Standard Hours) Standard Rate. Here, it is (6,400 - (2,280 4)) * 40 = $108,800. Direct Labor Cost Variance is the sum of Price Variance and Efficiency Variance, which is -$25,600 + $108,800 = $83,200. Variable Overhead: Price Variance is calculated as Actual Overhead - (Actual Hours Standard Overhead Rate). Here, it is $72,900 - (6,400 (40 0.25)) = -$8,900. Efficiency Variance is calculated as (Actual Hours - Standard Hours) Standard Overhead Rate. He