Answer:
The bank will loan you $147,321.36.
Step-by-step explanation:
The amount the ban will loan can be calculated using the formula for calculating the present value of an ordinary annuity as follows:
PV = P * ((1 - (1 / (1 + r))^n) / r) …………………………………. (1)
Where;
PV = Present value of the of loan or the amount the bank will loan you =?
P = Monthly mortgage payment = Monthly salary * 25% = $4,000 * 25% = $1,000
r = Monthly interest rate = 7.2% / 12 = 0.072 / 12 = 0.006
n = number of months = 30 years * 12 months = 360
Substitute the values into equation (1) to have:
PV = $1,000 * ((1 - (1 / (1 + 0.006))^360) / 0.006)
PV = $1,000 * ((1 - (1 / 1.006)^360) / 0.006)
PV = $1,000 * ((1 - 0.99403578528827^360) / 0.006)
PV = $1,000 * ((1 - 0.116071859187515) / 0.006)
PV = $1,000 * (0.883928140812485 / 0.006)
PV = $1,000 * 147.321356802081
PV = $147,321.36
Therefore, the bank will loan you $147,321.36.