Book value and taxes on sale of assets$$Troy Industries purchased a new machine $4$year$($s$)$ ago for $ $80000.$ It is being depreciated under MACRS with a$5-$year recovery period using the schedule Assume $21\%$ ordinary and capital gains tax rates.

a$.$ What is the book value of the$$ machine?

b$.$ Calculate the$$ firm's tax liability if it sold the machine for each of the following$$ amounts: $ $96000$; $ $56000$; $ $13600$; and $ $9500.$