Calculate the value of A. Enter Favourable variances as a positive number and Unfavourable variances as a negative number. 'J A B C D E 1# Static Actual Flex Budget Flex Budget Variance 2 Units 3 Revenues L Less: Total Variable Costs 5 Direct Materials 6 _ Direct labour 7 Variable Manuf. 0H. 8 Total Variable Costs $70,000 F 9 Total Contribution Margin $20,000 U 1g Total Fixed Costs $20,000 U 11 Operating Income 120,000 80,000 A