Answer:
Because they understand that the present value of $100,000 is same or lower than current $24,099 if discounting rate ≥ 4.86%
Explanation:
To find this discounting rate we solve this equatiation:
Present value of $100,000 payment 30 years ≤ $24,099
$100,000/(1+rate)^30 ≤ $24,099
↔ (1+rate)^30 ≥ 100,000/24,099
↔ (1+rate)^30 ≥ 4.15
↔ (1+rate) ≥ 4.15^(1/30)
↔ (1+rate) ≥ 1.05
↔ rate ≥ 1.0486 – 1
↔ rate ≥ 0.0486
↔ Rate ≥ 4.86 %