Cost Flow Methods

The following three identical units of Item JC$07$ are purchased during April:

Assume that one unit is sold on April $27$ for $$249.$ Determine the gross profit for April and

ending inventory on April $30$ using the $($a$)$ first$-$in$,$ first$-$out $($FIFO$)$; $($b$)$ last$-$in$,$ first$-$out $($LIFO$)$;

and $($c$)$ weighted average cost method.