Respuesta :
Total Amount that has to be paid if total duration for paying money is 20 years = $ 265,000
Rate of interest = 5.25 %(Depreciating rate)
When , time = 5 years
Amount left which is to be paid after 5 years=
[tex]=Principal \times [(1-\frac{Rate}{100})^{time}]\\\\ = 265,000\times [(1-\frac{5.25}{100})^5]\\\\ = 265,000\times[(\frac{94.75}{100})^5]\\\\=265,000\times (0.9475)^5\\\\ =265,000\times 0.763653\\\\ =202368.059[/tex]
When, time = 6 years
Amount left which is to be paid after 6 years=
[tex]=Principal \times [(1-\frac{Rate}{100})^{time}]\\\\ = 265,000\times [(1-\frac{5.25}{100})^6]\\\\ = 265,000\times[(\frac{94.75}{100})^6]\\\\=265,000\times (0.9475)^6\\\\ =265,000\times 0.72356\\\\ =191743.7363[/tex]
Difference in payments from year 5 to year 6 = $ 202368.059 - $ 191743.73
=$ 10624.329 (approx)
Monthly payment [tex]=\frac{10624.329}{12}\\\\ = 885.360[/tex]
Option (B) 880. ... is appropriate.