E12.26 (LO 2. 3. 4) The following direct materials and direct tabour data are for the operations of Batista Manufacturing Company for the month of August Costs Quantities Actual labour rate $13.00 per hour Actual hours incurred and used 3,200 hours Actual materials price $89.00 per tonne Actual quantity of materials purchased and used 910 tonnes Standard labour rate $12.00 per hour Standard hours used 3,240 tonnes Standard materials price $90.00 per tonne Standard quantity of materials used 900 tonnes Instructions a. Calculate the total, price, and quantity variances for materials and labour. b. Provide two possible explanations for each of the unfavourable variances calculated in part (a), and suggest which department might be responsible for the unfavourable result. Calculate overhead variances and list reasons for unfavourable variances