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E9-15 (Algo) Determining Actual Costs, Standard Costs, and Variances [LO 9-3, 9-4] Amber Company produces iron table and chair sets. During October, Amber's costs were as follows: Required: 1. Calculate the total cost of purchases for October. 2. Compute the direct materials price variance based on the actual quantity purchased. 3. Calculate the direct materials quantity variance based on the actual quantity used. 4. Compute the standard direct labor rate for October. 5. Compute the direct labor efficiency variance for October