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Laurent moved from Quebec City to Montreal. He has his eye on the Plateau, which is a great area with lots of restaurants. He wants to save sufficient money for a down payment that allows him to have a conventional mortgage so as to avoid having to pay for mortgage loan insurance with the Canada Mortgage Housing Corporation (CMHC). The new condo units that he is interested in are on the market for $132,000. How long would it take Laurent to save for the 20% down payment, if interest is at 6.75% compounding monthly with monthly savings of $35? a. 63 months b. 60 months c. 70 months d. 65 months e. 42 months

Answer :

Final answer:

It would take Laurent approximately 67 months to save for the 20% down payment on the new condo units.

Explanation:

To calculate the time it would take Laurent to save for the 20% down payment on the new condo units, we can use the formula for compound interest. The formula is: A = P(1 + r/n)^(nt), where A is the future value of the investment, P is the principal amount (the initial investment), r is the annual interest rate (as a decimal), n is the number of times that interest is compounded per year, and t is the number of years. In this case, the principal amount is $132,000 and the future value we want to achieve is 20% of that, which is $26,400. The interest rate is 6.75% (or 0.0675 as a decimal), compounded monthly, and the monthly savings is $35. Plugging in these values, we get:

$26,400 = $132,000(1 + 0.0675/12)^(12t)

Simplifying the equation, we have:

5/24 = (1 + 0.0675/12)^(12t)

To solve for t, we need to take the logarithm of both sides of the equation. Using logarithmic properties, we can rewrite the equation as:

ln(5/24) = ln((1 + 0.0675/12)^(12t))

Using the power rule of logarithms, we can further simplify the equation:

ln(5/24) = 12t * ln(1 + 0.0675/12)

Now, we can isolate t by dividing both sides of the equation by 12 * ln(1 + 0.0675/12):

t = ln(5/24) / (12 * ln(1 + 0.0675/12))

Using a calculator, we can find that t is approximately 5.55 years. Since we want the answer in months, we multiply t by 12:

t (in months) = 5.55 * 12 = 66.6 months

Therefore, it would take Laurent approximately 67 months to save for the 20% down payment on the new condo units.

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