Amortization Question for when Loan Amount is NOT given- WALK THROUGH

If a borrower can afford to make monthly principal and interest payments of $1,000 and the lender will make a 30-year loan at 5-1/2%, or a 20-year loan at 4-1/2%, what is the largest loan (rounded to the nearest $100) this buyer can afford? (BE SURE TO USE THE AMORTIZATION TABLE.)