Morgan manufactures a product Z and provides the following information for the last month: Budgeted figures: Variable manufacturing overheads R20 000 Fixed manufacturing overheads R48 000 Labour hours Expected production 4.000 1 000 units Actual results: Variable manufacturing overheads Fixed manufacturing overheads Labour hours worked Actual production R19 135 R49 880 4 300 1 050 units 3. Calculate the following variable manufacturing overheads variances (in Rands) and state if they are favourable or unfavourable: 3.1 Efficiency variance 3.2 Expenditure variance 3.3 Total variable overheads variance