Norther Leasing Corp. has the following standards for one unit of product:

Direct material: 80 pounds X $6	$480
Direct labor: 3 hours X $16 per hour	48
Variable overhead: 1.5 hours of machine time X $50 per hour	75
Fixed overhead: 1.5 hours of machine time X $30 per hour	45

The predetermined OH rates were developed using a practical capacity of 6,000 units per year. Production is assumed to occur evenly throughout the year.

During May 2010, the company produced 525 units. Actual data for May 2010 are as follows:

Direct material purchased: 45,000 pounds X $5.92 per pound

Direct material used: 43,020 pounds (all from Mays purchases)

Total labor cost: $24,955 for 1,550 hour

Variable overhead incurred: $43,750 for 800 hours of machine time

Fixed overhead incurred: $22,800 for 800 hours of machine time

Required: Calculate the following:

a) Variable overhead Cost

b) Variable overhead expenditure variance

c) Variable efficiency variances

d) Fixed overhead cost

e) Fixed overhead expenditure

f) Fixed volume variances