APCO Company manufactures various lines of bicycles. Because of the high volume of each line, the company employs a process costing system using the weighted$-$average method. Bicycle parts are manufactured in the molding department and then are consolidated into a single bike unit in the molding department and transferred to the assembly department, where they are assembled. After assembly, the bicycle is sent to the packing department. Annual cost and production figures for the assembly department are presented in the schedules below.

Defective bicycles are identified at the inspection point when the assembly labor process is $70\%$ complete; all assembly materials have been added at this point. The normal rejection rate for defective bicycles is $5\%$ of the bicycles reaching the inspection point. Any defective bicycles above the $5\%$ quota are considered to be abnormal. All defective bikes are removed from the production process and destroyed.

Assembly Department Cost Data Total Cost of Bike through Assembly

Transferred in from Molding Department Assembly Materials Assembly Conversion

Prior period costs $ $98,200$ $ $9,060$ $ $14,650$ $ $121,910$

Current period costs $1,250,600104,520248,2701,603,390$

Total costs $ $1,348,800$ $ $113,580$ $ $262,920$ $ $1,725,300$

Assembly Department Production Data

Bicycles Percentage Complete

Transferred in Assembly Materials Assembly Conversion

Beginning inventory $3,160100\%100\%80\%$

Transferred in from molding during year $61,000100$

Transferred out to packing during year $48,000100100100$

Ending inventory $4,3201005020$

Required:

$1.$ Compute the number of defective, or spoiled, bikes that are considered to be

a$.$ Normal spoilage.

b$.$ Abnormal spoilage.

$2.$ Compute the equivalent units of production for the year for

a$.$ Bicycles transferred in from the molding department.

b$.$ Bicycles produced with regard to assembly materials.

c$.$ Bicycles produced with regard to assembly conversion.

$3.$ Compute the cost per equivalent unit for the fully assembled bike.

$4.$ Compute the amount of the total production cost of $$1,725,300$ that will be associated with the following items:

a$.$ Normal spoiled units.

b$.$ Good units completed in the assembly department.

c$.$ Abnormal spoiled units.

d$.$ Ending Work$-$in$-$Process Inventory in the assembly department.