Granville Ltd's standard and actual costs per unit for the most recent period, during which 400 units were actually produced, are given below: Actual $3.36 Standard Materials: Standard: 2 metres at $1.50 per m. $3.00 Actual: 2.1 metres at $1.60 per m. Direct labour: Standard: 1.5 hrs. at $6.00 per hr. 9.00 Actual: 1.4 hrs. at $6.50 per hr. Variable overhead: Standard: 1.5 hrs. at $3.40 per hr. 5.10 Actual: 1.4 hrs. at $3.10 per hr. Total unit cost $17.12 There were no inventory of materials at the beginning or end of the period. 9.10 4.34 $16.80 Required: From the above information, compute the following variances. Show whether the variance is favourable (F) or unfavourable (U) with calculations: a) Materials price variance b) Materials quantity variance c) Direct labour rate variance d) Direct labour efficiency variance e) Variable overhead spending variance