Glencoe, Inc., costs products using a normal costing system. The following data is available for last year: Budgeted: Actual: Overhead Machine hours Direct labour hours R476 000 140 000 17 000 Overhead Machine hours Direct labour hours Prime cost Number of units R475 000 137 000 16 550 R1 750 000 250 000 Overhead is applied on the basis of direct labour hours. Required: 4.1 Calculate the predetermined overhead rate. 4.2 Calculate the applied overhead for last year. 4.3 4.4 Was the overhead over- or under-applied, and by how much? Calculate the total cost per unit produced (to 2 decimal places).