Arman Corporation's relevant range of activity is $4,080$ units to $9,520$ units. When

it produces and sells $6,800$ units, its average costs per unit are as follows:

Required:

a$.$ If $8,160$ units are produced, what is the total amount of fixed manufacturing cost

incurred?

b$.$ If $8,160$ units are produced, what is the total amount of manufacturing overhead

cost incurred? What is this total amount expressed on a per unit basis?

Note: Round per unit manufacturing overhead cost to $2$ decimal places.

c$.$ If $5,440$ units are produced, what is the total amount of direct manufacturing

cost incurred?

d$.$ If $5,440$ units are produced, what is the total amount of indirect manufacturing

cost incurred?

d$.$ Total indirect manufacturing cost