Company J must choose between two alternate business expenditures. Expenditure 1 would require a $80,000 cash outlay, and Expenditure 2 requires a $60,000 cash outlay. Determine the marginal tax rate at which the after-tax cash flows from the two expenditures are equal assuming that:

a. Expenditure 1 is fully deductible and Expenditure 2 is nondeductible.

b. Expenditure 1 is 50% deductible and Expenditure 2 is nondeductible.

c. Expenditure 1 is fully deductible and Expenditure 2 is 50 percent deductible