Learning Objective 3 S23-6 Calculating materials variances Martin, Inc. is a manufacturer of lead crystal glasses. The standard direct materials quantity is 1.0 pound per glass at a cost of $0.50 per pound. The actual result for one month's production of 6,500 glasses was 1.2 pounds per glass, at a cost of $0.30 per pound. Calculate the direct materials cost variance and the direct materials efficiency variance. Learning Objective 3 S23-7 Calculating labor variances Martin, Inc. manufactures lead crystal glasses. The standard direct labor time is 0.5 hours per glass, at a cost of $18 per hour. The actual results for one month's production of 6,500 glasses were 0.2 hours per glass, at a cost of $11 per hour. Calculate the direct labor cost variance and the direct labor efficiency variance. Learning Objective 3 DL Eff. Var. $2,400 F E23-19 Calculating materials and labor variances Matthews Fender, which uses a standard cost system, manufactured 20,000 boat fenders during 2018, using 143,000 square feet of extruded vinyl purchased at $1.30 per square foot. Production required 400 direct labor hours that cost $16.00 per hour. The direct materials standard was seven square feet of vinyl per fender, at a standard cost of $1.35 per square foot. The labor standard was 0.028 direct labor hour per fender, at a standard cost of $15.00 per hour. Compute the cost and efficiency variances for direct materials and direct labor. Does the pattern of variances suggest Matthews Fender's managers have been making trade- offs? Explain