$($a$)$

$-$ Your answer is partially correct.

Determine the cost of goods sold and ending inventory using $(1)$ FIFO and $(2)$ average cost, assuming Powder uses a perpetual inventory system. $($Round FIFO answers to $0$ decimal places, e$.$g$.5,275$ and Average cost answers to $2$ decimal places, e$.$g$.5,275\mathrm{.}25.$ Do not round intermediate calculations.$)$