Please help with these problems

GCL Inc. has undertaken the analysis of variable overhead for the same accounting period and has managed to extract the following information:- Variable overhead is applied on the basis of direct labour hours. Standard rate per direct labour hour for variable overhead is 3 per hour. During April, a total of 2,000 direct labour hours were worked. Variable overhead spending variance is 400 (U). Total variable overhead variances are 500 (F). Required: Calculate the following for the variable overhead: (i) Actual rate per direct labour hour (ii) Variable overhead efficiency variance for the month of April (iii) Standard direct labour hours allowed for output of April [8 marks] Marvel Monsters Inc. manufactures auto accessories. One of the company's products is a set of seat covers that can be adjusted to t nearly any small car. The company has a standard cost system in use for all of its products. According to the standards that have been set for the seat covers, the factogy should work 2,850 hours each month and produce 1,900 sets of covers. The standard costs associated with this level of production are:- Total Per set of covers Direct materials 42,560 22.40 | Direct labour 17,100 9.00 | Variable manufacturing overhead 6,840 3.60 based on direct labour hours During August, the factory worked only 2,800 direct labour hours and produced 2,000 sets of covers. The following actual costs were recorded during the month:- Per set of covers Direct materials 12 000 ards 45 600 Direct labour 18,200 Variable manufacturing overhead 7,000 (based on direct labour hours) At standard, each set of covers should require 5.6 yards of material. All of the materials purchased during the month were used in production. Required: (a) Compute the direct materials price and quantity variances for August. [5 marks] (b) Compute the direct labour rate and efficiency variances for August. [5 marks] (c) Compute the variable overhead rate and efficiency variances for August. [5 marks] (d) Based on your answers in parts (a) to (c), identify two most significant variances and explain the possible causes of these variances. [5 marks] [Total 20 marks]