The standard overhead rate per unit of product is as follows: Variable, `20 + Fixed (`30,000 4 3,000), `100 = `120. Standard time for producing each unit of output is 10 hours. During a period, the...

The standard overhead rate per unit of product is as follows: Variable, `20 + Fixed (`30,000 4 3,000), `100 = `120. Standard time for producing each unit of output is 10 hours. During a period, the following actual data is available: Hours worked, 27,000; Output, 2,600 units. Overheads = Variable, `50,000 + Fixed, `2,80,000 = `3,30,000. Calculate different overheads variances, including efficiency variance and capacity variance.