The following data pertain to the first week of operations during the month of june:
Materials: actual purchases 1500 units at Rs.3.80 per unit
Actual usage 1350 units
Standard usage 1020 units at Rs.4.00 per unit
Direct labour: actualhours 310 hours at Rs.12.10 per hour
Standard hours 340 hours at Rs.1.00 per hour
Required: Compute the following variance indicating whether the variances are favorable or unfavorable:
(i) Materials purchase price variance price usage variance, and quantity variance.
(ii) Labour rate efficiency variance.