Monty Vision Inc. opened for business on Jan $1,$ and uses a perpetual inventory system. During January, the company had the following

purchases and sales for one of its products:

$($a$)$

Determine the cost of goods sold and cost of ending inventory using $(1)$ FIFO and $(2)$ average cost. Ignore the effect of income tax.

$($Round average cost answers to $2$ decimal places, e$.$g$.5,275\mathrm{.}75.)$