Amber Company produces iron table and chair sets. During October, Amber's costs were as follows: Calculate the total cost of purchases for October. Compute the direct materials price variance based on quantity purchased. (Indicate the effect of each variance by selecting "F" for favorable, "U for unfavorable.) Calculate the direct materials quantity variance based on quantity used. (Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable.) Compute the standard direct labor rate for October. (Round your answer to 2 decimal places.) Compute the direct labor efficiency variance for October. (Round your intermediate instruction 2 decimal places. Indicate the effect of each variance by selecting "F" for favorable, "U" for unfavorable.)