Perpetual Inventory Using LIFO

Beginning inventory, purchases, and sales for Item $88-Hx$ are as follows:

$\backslash$table$[[$Oct$.1,$Inventory,$80$ units @ $$18],[8,$Sale,$64$ units$],[15,$Purchase,$89$ units @ $$21],[27,$Sale,$75$ units$]]$

Assuming a perpetual inventory system and using the last$-$in$,$ first$-$out $($LIFO$)$ method, determine $($a$)$ the cost of goods sold on Oct. $27$ and $($b$)$ the inventory on Oct. $31.$

a$.$ Cost of goods sold on Oct. $27$

$

b$.$ Inventory on Oct. $31$

$