Answer and Explanation:
The computation is shown below:
1.
Particulars Amount PV factor at 6% for 10 years Present value
Semi-annual interest $27,500 7.360087 $202,402.39
($500,000 × 11% ÷ 2)
Principal $500,000 0.558395 $279,197.50
Total $481,599.89
2.
Particulars Amount PV factor at 5% for 10 years Present value
Semi-annual interest $27,500 7.721735 $212,347.71
($500,000 × 11% ÷ 2)
Principal $500,000 0.613913 $306,956.5
Total $519,304.21