a) Direct material cost percentage rate = Total overheads/Direct material cost *100
b) Direct labour cost percentage rate = Total overheads/Direct labour cost *100
c) Prime cost percentage rate = Total overheads/Prime cost *100
d) Direct labour hour rate = Productionoverheads/Direct labour hours
e) Machine hour rate = Total overheads/No. Of machine hours
f) Rate per unit of output = Total overheads/No. Of units produced