Delta Company has developed the following standards for one of its products, DTC. The standard variable costs per unit of the product are as follows: Direct materials: 25 square metres @ $10.50 per square metre $262.50 Direct labour: 8 hours @ $11 per hour 88.00 Variable manufacturing overhead: 8 labour hours @ $6 per labour hour 48.00 Total standard variable cost per unit $398.50 The following activities occurred during the month of May: Units produced 5,000 units Direct materials purchased 150,000 square metres at $11.25 per square metres Direct materials used 120,000 square metres Direct labour 42,000 hours at $12.50 per hour Actual variable manufacturing overhead costs $24