A sailboat costs 20842$ You pay 10% down and amortize the rest with equal monthly payments over a 14 ​-year period. If you must pay 6.6% compounded​ monthly.

what is your monthly​ payment?
How much interest will you​ pay?

To find the monthly payment, we need to calculate the principal amount that will be amortized and the interest rate per period.

Principal amount = Total cost - Down payment
Principal amount = $20842 - ($20842 * 0.10)
Principal amount = $20842 - $2084.20
Principal amount = $18757.80

Number of periods = 14 years * 12 months per year
Number of periods = 168 months

Monthly interest rate = (1 + interest rate)^periods - 1
Monthly interest rate = (1 + 0.066/12)^168 - 1

Monthly payment = Principal amount * Monthly interest rate / (1 - (1 + Monthly interest rate)^(-Number of periods))
Monthly payment = $18757.80 * [((1 + 0.066/12)^168 - 1) / (1 - (1 + 0.066/12)^(-168))]

Using the formula, the monthly payment is approximately $176.40.

To find the total interest paid, we can subtract the principal amount from the total amount paid over the 14-year period.

Total amount paid = Monthly payment * Number of periods
Total amount paid = $176.40 * 168
Total amount paid = $29635.20

Interest paid = Total amount paid - Principal amount
Interest paid = $29635.20 - $18757.80

The interest paid is approximately $10877.40.

To calculate the monthly payment, we can use the formula for the amortization of a loan:

M = P * r * (1 + r)^n / ((1 + r)^n - 1)

Where:
M is the monthly payment,
P is the principal amount (cost of the sailboat - down payment),
r is the monthly interest rate (6.6% / 12 = 0.0055),
n is the total number of payments (14 years * 12 months = 168).

First, let's calculate the principal amount (P):
P = $20,842 - 10% down payment
P = $20,842 - ($20,842 * 0.1)
P = $20,842 - $2,084.2
P = $18,757.8

Next, let's calculate the monthly payment (M):
M = $18,757.8 * 0.0055 * (1 + 0.0055)^168 / ((1 + 0.0055)^168 - 1)

Using a calculator, the monthly payment comes out to be approximately $171.87.

To calculate the total interest paid, we can use the formula:

Total Interest = (M * n) - P

Where:
M is the monthly payment,
n is the total number of payments (168),
P is the principal amount ($18,757.8).

Total Interest = ($171.87 * 168) - $18,757.8

Using a calculator, the total interest paid comes out to be approximately $4,846.40

To find the monthly payment and the total interest paid, we can use the formula for amortized loans. The formula is:

Monthly Payment = (Loan Amount * Monthly Interest Rate) / (1 - (1 + Monthly Interest Rate) ^ (-Number of Months))

To calculate the monthly payment, we need to find the Loan Amount, Monthly Interest Rate, and Number of Months.

1. Loan Amount: You pay 10% down on the sailboat, which means you need to find 90% of its cost. So, the Loan Amount is 90% of $20,842.
Loan Amount = $20,842 x 0.90 = $18,757.80

2. Monthly Interest Rate: The annual interest rate is 6.6%, compounded monthly. To find the monthly interest rate, we need to divide the annual interest rate by 12 (number of months in a year).
Monthly Interest Rate = 6.6% / 12 = 0.066 / 12 = 0.0055

3. Number of Months: The loan is amortized over a 14-year period. To find the number of months, we multiply the number of years by 12 (number of months in a year).
Number of Months = 14 x 12 = 168

Now, substitute the values into the formula:

Monthly Payment = ($18,757.80 * 0.0055) / (1 - (1 + 0.0055) ^ (-168))
Monthly Payment ≈ $165.32

So, the monthly payment for this loan would be approximately $165.32.

To find the total interest paid, we subtract the Loan Amount from the sum of all the monthly payments over the 14-year period.

Total Interest Paid = (Monthly Payment * Number of Months) - Loan Amount
Total Interest Paid = ($165.32 * 168) - $18,757.80
Total Interest Paid ≈ $9,210.86

Therefore, the total interest paid would be approximately $9,210.86.