Holliday Company's inventory records show the following data:Inventory on January $1$st $5000$ units at $$9$ unit cost, Purchase on June $184500$ units at $$8$ unit cost and purchase on November $8$th $3000$ units at $$7$ unit cost.

A physical inventory on December $31$ shows $2,000$ units on hand. Holliday sells the units for $$12$ each. The

company has an effective tax rate of $20\%.$ Holliday uses the periodic

inventory method.

The weighted$-$average cost per unit is$?$

If the company uses FIFO, what is the gross profit for the period?