Additional information The variable manufacturing cost per unit and total manufacturing cost per unit of the finished goods on 01 March 2022 was R21.60 and R26.20 respectively. 2.2 2.2.1 Use the information provided below to calculate the following manufacturing variances for March 2022. Note: Each answer must state whether the variance is favourable or unfavourable. Labour rate variance 2.2.2 Labour efficiency variance 2.2.3 Variable overheads efficiency variance 2.2.4 Variable overheads expenditure variance INFORMATION (2 marks) (2 marks) (2 marks) (2 marks) Nevada Limited set a standard labour rate of R32 per hour and a standard variable overhead rate of R3.80 per labour hour. Actual hours worked for March 2022 were 4 910 at a cost of R149 264. The actual variable overhead cost incurred was R19 640. The standard allowance of labour hours for the output achieved was 5 000 hours.