Proton Company: Equivalent units in process costing $-$ weighted average vs FIFO:

On April $1,2020,$ The Proton Company had $40,000$ units in its work in process inventory, $100\%$ complete with respect to materials and $20\%$ complete with respect to conversion costs. During April, $320,000$ units were started in Department X$.340,000$ units were transferred to department $Y$ during the month. On April $30,2020,$ the company had $20,000$ units in its work in its process inventory, $100\%$ complete as to materials and $40\%$ complete as to conversion cost.

Required: Compute equivalent units for department $x$ assuming the Proton Company uses:

a weighted average method

a FIFO meth