Stewart Company, a recent entrant to the market, manufacturers a popular robotic toy. There are two production departments$$Assembly and Finishing. Selected budgeted and actual data are below.$$Budgeted overhead

Actual overhead

Expected direct labor hours Expected machine hours

Assembly

$$510,000$ $$343,200120,0001,300$

Finishing

$$400,000$ $$198,00024,96080,000$

During the year, $15,000$ units of the toy were produced and $10,000$ units were sold. Actual data related to this production are below.

Direct materials cost Direct labor cost

Direct labor hours used:

Assembly

Finishing

Machine hours used:

Assembly Finishing

$$547,355$ $$48,600$

$130,94026,880$

$1,68082,560$

Stewart uses departmental overhead rates$$Assembly is based on direct labor hours and Finishing is based on machine hours.

If necessary, round final answers to $2$ decimal places.

Required:

$1.$ Compute the departmental overhead rates for a$)$ Assembly and b$)$ Finishing.

$2.$ Using the departmental rates, compute the overhead costs assigned to production?

$3.$ For Finishing only, compute the overhead variance and label it as under$-$ or overapplied.

$4.$ Compute the per$-$unit manufacturing cost for the production $($assuming normal costing$).$