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4. The following data pertain to Nell Company's operations for June: Standard quantity of materials per unit of product Standard cost of materials per pound Standard direct labor hours Standard wage rate per hour Actual output Materials purchased Actual cost of materials purchased Materials in ending inventory Actual direct labor hours required Wage Rate paid per hour 5 pounds $0.20 0.04 hours $7.00 100,000 units 100,000 pounds $20,000 40,000 pounds 3,900 hours $7.20 Required: a) Calculate Nell's materials price and quantity variance for June. (6) b) Calculate Nells labor rate and efficiency variance for June. (6) c) Interpret the Variance stating whether the variances are favorable or unfavorable for the firm. (3)