Assume that one unit is sold on April $27$ for $$300.$

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.

$\backslash$table$[[,$Gross Profit,End,atory$],[$a$.$ First$-$in$,$ first$-$out $($FIFO$),,$$$,x$