Q4 (25 marks) Budgeted output 30,000 units Budgeted machine-hours 10,000 hours Budgeted variable manufacturing overhead costs for 30,000 $322,500 units Actual output produced 44,000 units Actual machine-hours used 14,400 hours Actual variable manufacturing overhead costs $484,000 Instructions: 1) Calculate the flexible amount and variance for variable manufacturing overhead. 2) Calculate the variable overheard rate variance. 3) Comment on the nature of both variances