Zvinakis Mining Company paid $$200,000$ for the rights to mine lead in southeast

Missouri. The cost to drill and erect a mine shaft was $$2,400,000,$ and equipment to

process the lead ore before shipment to the smelter was $$1,800,000.$ The mine is expected

to yield $2,000,000$ tons of ore during the five years it is expected to be operating. The

equipment has an estimated residual value of $$150,000$ when mining is concluded. The

mine started operations on April $30,2021.$ In $2021,300,000$ tons of ore were extracted,

and in $2022,700,000$ tons were mined.

Required:

a$.$ Compute the depletion rate and the units$-$of$-$production depreciation rate.

b$.$ Compute depletion and depreciation for $2021$ and $2022.$