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Tju [1.3M]
3 years ago
8

Leo decides to buy a car for $9600 with a 5-year finance plan that offers 0% financing for the first yearThe APR after that will

be 3.9%. Interest is compounded monthly. How much will his monthly payment be if he makes payments of $150 per month during the first year?
Mathematics
1 answer:
Marianna [84]3 years ago
3 0

Answer:

The monthly payment of Leo for the car loan for next four years is $759.5

Step-by-step explanation:

Given as :

The loan of the car = $9600

The rate of interest for first year = 0%

The next 4 years, the rate of interest = 3.9%  compounded monthly

The amount paid for first year = $150 per months

I.e The amount paid for first month = $150 × 12 = $1800

Let The amount for next fours years = $A

Now, According to question

∵ For the first year $1800 is paid

So, The rest amount of loan = $9600 - $1800 = $7800

<u>From compound interest </u>

Amount = principal × (1+\dfrac{\textrm rate}{12\times 100})^{\textrm 12\times time}

Or, $A = $7800 ×  (1+\dfrac{\textrm 3.9}{12\times 100})^{\textrm 12\times 4}

Or, A =  $7800 × (1.00325)^{48}

Or,  A =  $7800 × 1.1685

∴ A = $9114.3

So, The amount paid after 4 years = A = $9114.3

Or,The amount paid after 4 years as per months = \dfrac{9114.3}{12}

Or,The amount paid after 4 years as per months = $759.5

Hence The monthly payment of Leo for the car loan for next four years is $759.5 Answer

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A store has been selling 100 Blu-ray disc players a week at $600 each. A market survey indicates that for each $40 rebate offere
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Answer:

<em>The rebate should be $220</em>

Step-by-step explanation:

<u>Demand Curve</u>

It's the relationship between price (P) and quantity (Q) demanded a certain product or service.

(a) We need to find the function that relates both magnitudes assuming a linear equation. The equation of a line can be found with the point-point formula:

\displaystyle Q-Q_1=\frac{Q_2-Q_1}{P_2-P_1}(P-P_1)

Two sets of data are given: 100 Blu-ray disc players are sold a week at $600 each. The ordered pair for this condition is (P,Q)=(600,100).

The other point comes from the market survey: The number of units sold will increase by 80 (100+80=180) when the price goes down $40 (600-40=560). The new point is (P,Q)=(560,180)

We set up the equation of the demand

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Rearranging

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Or

80P+40Q=48800

Simplifying

2P+Q=1120

(b) The revenue function is Q times the price

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Solving the equation of the demand for P

\displaystyle P=\frac{1120-Q}{2}

Thus, the revenue is

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\displaystyle R=\frac{1120Q-Q^2}{2}

(c) To find the optimum value of the revenue, we take the derivative of R and equate to 0

\displaystyle R'=\frac{1120-2Q}{2}=560-Q=0

Solving

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\displaystyle R=\frac{1120(560)-560^2}{2}

R=\$156,800

And the price is

\displaystyle P=\frac{1120-560}{2}=280

P=\$280

The rebate should be $600-$280=$220

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