Jan-Con Company Provides the Following Information for the Month of August

Jan-Con Company provides the following information for the month of August. $$\begin{array} { | l | l | c | c | c | } \hline { \text { Date } } & & \text { Units } & \$/ \text { Unit } & \text { Total } \\\hline \text { Aug 1 } & \text { Opening inventory } & 40 & \$ 30 & \$ 1,200 \\\hline \text { Aug 3 } & \text { Purchase } & 60 & \$ 35 & \$ 2,100 \\\hline \text { Aug 10 } & \text { Sale } & 100 & \$ 60 & \$ 6,000 \\\hline \text { Aug 22 } & \text { Purchase } & 90 & \$ 40 & \$ 3,600 \\\hline \text { Aug 24 } & \text { Sale } & 70 & \$ 70 & \$ 4,900 \\\hline\end{array}$$ Required:
(a)What is the value of the ending inventory assuming the company uses a periodic inventory system and the weighted-average method?
(b)What is the cost of goods sold if the company uses a perpetual inventory system and the FIFO method of valuing inventory?
(c)What is the cost of goods sold if the company uses a perpetual inventory system and the weighted average method of valuing inventory?