Calculate the labour variances from the following data: Standard Actual Standard Actual hours hours wage rate (£) wage rate (£) (i) Joba 450 426 5.20 5.60 (ii) Jobb 660 680 4.90 4.70 (iii) Jobc 150 140 5.30 4.90 (iv) Jobd 510 520 5.10 5.40 (v) Jobe 420 450 5.20 4.80 (vi) Job f 810 780 4.60 5.00