Shown below is activity for one of the products of Denver Office Equipment:

Compute the cost of goods available for sale during the period.

Compute the January $31$ cost of goods sold for January, assuming Denver uses FIFO and a

perpetual inventory system.

Assume Denver uses FIFO and a perpetual inventory system. If the net realizable value of ending

inventory is $$27,000,$ at what amount should inventory be reported on the end period balance

sheet?

Now assume Denver uses LIFO and a perpetual inventory system. Compute the January $31$ ending

inventory for January.

Assume Denver uses LIFO and a perpetual inventory system. If all units were sold for $$75$ per unit,

what is gross profit for the period?