Periodic inventory using FIFO, LIFO, and weighted average cost methods

The units of an item available for sale during the year were as follows:

DateLine Item DescriptionUnitsCost per UnitAmountJan. $1$Inventory$40$ unitsat $$165$$$6,600$Aug. $13$Purchase$200$ unitsat $$18036,000$Nov. $30$Purchase$60$ unitsat $$20012,000$Available for sale$300$ units$$$$54,600$

There are $75$ units of the item in the physical inventory at December $31.$ The periodic inventory system is used. Determine the inventory cost using the $($a$)$ first$-$in$,$ first$-$out $($FIFO$)$ method; $($b$)$ last$-$in$,$ first$-$out $($LIFO$)$ method; and $($c$)$ weighted average cost method.

Line Item DescriptionAmounta. First$-$in$,$ first$-$out $($FIFO$)$ method$fill in the blank $1$b$.$ Last$-$in$,$ first$-$out $($LIFO$)$ method$fill in the blank $2$c$.$ Weighted average cost method$fill in the blank $3$