SOLUTION: Tina is buying a new apartment. She can afford a mortgage payment of $1050 a month, and a downpayment of $16000. She obtained a 18 year loan at 8% compounded monthly. What is the m

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Question 1186435: Tina is buying a new apartment. She can afford a mortgage payment of $1050 a month, and a downpayment of $16000. She obtained a 18 year loan at 8% compounded monthly. What is the most expensive apartment she can buy?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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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 = L%2A%28r%2F%281-%281%2Br%29%5E%28-n%29%29%29


where L is the loan amount; r = 0.08%2F12 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 = M%2F%28%28r%2F%281-%281%2Br%29%5E%28-n%29%29%29%29.


In this problem  M = $1050;  r = 0.08%2F12,  n = 18*12 = 216 monthly payments.


Substitute these values into the formula and get for the maximum mortgage amount

    L = 1050%2F%28%28%280.08%2F12%29%2F%281-%281%2B0.08%2F12%29%5E%28-216%29%29%29%29 = $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.