The amount of loan from the bank is $92,659. With 18% nominal interest, your equal monthly loan payment is $1,430
This is a present value of an annuity problem.
The amount of loan = house's price - down payment
= $115,861 - $23,202 = $92,659
Since it is compounded monthly, hence, the number of periods (n):
n = 20 years x 12 = 240 months
i = interest rate per period = 0.18/12 = 0.015
The formula for the present value of an annuity is:
PV = C × (1 - (1+i)⁻ⁿ)/i
Where:
C = payment per period
Therefore,
92,659 = C (1 - (1 + 0.015)⁻²⁴⁰) / 0.015
C = 1430
Thus, you need to pay $1,430 per month for the loan.
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