Riverbend Inc. received a $250,000 dividend from stock it held in Hobble Corporation. Riverbend's taxable income is $2,460,000 before deducting the dividends received deduction (DRD), a $68,500 NOL carryover, and a $172,000 charitable contribution. Use Exhibit 16-6. (Round your tax rates to 1 decimal place. Leave no answer blank. Enter zero if applicable.)

a. What is Riverbends deductible DRD assuming it owns 10 percent of Hobble Corporation?

b. Assuming the facts in part (a), what is Riverbends effective tax rate on the dividend?

c. What is Riverbends DRD assuming it owns 51 percent of Hobble Corporation?

d. Assuming the facts in part (c), what is Riverbends marginal tax rate on the dividend?

e. What is Riverbends DRD assuming it owns 87 percent of Hobble Corporation (and is part of the same affiliated group)?

f. Assuming the facts in part (e), what is Riverbends marginal tax rate on the dividend?