Layt Clock Company has developed the following flexible budget for its overhead costs. Manufacturing overhead at Layt is applied to production on the basis of standard machine-hours:

	Machine Hours
	21,600	24,000	26,400
Clocks produced	18,000	20,000	22,000
Variable overhead cost	$127,440	$141,600	$155,760
Fixed overhead cost	$171,072	$171,072	$171,072

Layt was expecting to produce 22,000 clocks last year. The actual results for the year were as follows:

Number of clocks produced	21,500
Machine-hours incurred	24,940
Variable overhead cost	$145,899
Fixed overhead cost	$170,540

Required:

Compute all four manufacturing overhead variances for Layt.