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Tina is buying a new apartment. She can afford a mortgage payment of $1050 a month,
and a down payment of $16000. She obtained a 18 year loan at 8% compounded monthly.
What is the most expensive apartment she can buy?
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Use the formula for the monthly payment for a mortgage
M =
where L is the loan amount; r = is the effective interest rate per month;
n is the number of payments (same as the number of months); M is the monthly payment.
From this formula, the expression for the maximum loan is
L = .
In this problem M = $1050; r = , n = 18*12 = 216 monthly payments.
Substitute these values into the formula and get for the maximum mortgage amount
L = = $120,005.13 (rounded).
Thus, the maximum mortgage amount is about $120,000.
Add to it the down payment of $16,000 to get the most expensive price for the apartment
of $120,000 + $16,000 = $136,000. ANSWER
Solved.