Weighted Average Cost Flow Method Under Perpetual Inventory System

The following units of a particular item were available for sale during the calendar year:

Jan. $1$ Inventory $15,000$ units at $$60\mathrm{.}00$

Mar. $18$ Sale $12,000$ units

May $2$ Purchase $27,000$ units at $$62\mathrm{.}00$

Aug. $9$ Sale $22,500$ units

Oct. $20$ Purchase $10,500$ units at $$64\mathrm{.}20$

The firm uses the weighted average cost method with a perpetual inventory system. Determine the cost of merchandise sold for each sale and the inventory balance after each sale. Present the data in the form illustrated in Exhibit $5.$ Round unit cost to two decimal places, if necessary.