Solution:
a) Calculation of Equivalent Units using weighted average method :-
Materials = Complete Unit + Work in Process Inventory
= 121,700+ 16,700
= 138,400 Units
Conversion Costs = Complete Units + 72% of ending Work in Process inventory
= 121,700+ 72% * 16,700
= 121,700+ 12,024
= 133,724 units
b) Calculation of Equivalent Units using FIFO Method.
Materials = Complete Units + ending work in process
= (16,700- 121,700) + 16,700
= 4530 + 16,700
= 21,230 units
Conversion Cost = Beginning Work in Process + Complete Units + Ending Work in Process
= (16,700*57%) + (121,700- 16,700) + (16,700*72%)
= 126,543 units