Final answer:
The 51st car loan payment's interest is $18.81 with the principal being $367.85. The monthly motorcycle loan payment is approximately $176.05. To make eight $10,900 tuition payments on schedule, an initial deposit of approximately $16,036.75 is required.
Step-by-step explanation:
To calculate the portions of the 51st payment going toward interest and principal for a car loan following the provided scenario: First, we will calculate the interest portion using the formula Interest = Remaining balance × Monthly interest rate. With an APR of 6%, the monthly interest rate is 0.06/12 = 0.005. Therefore, the interest for the 51st payment is $3,762.36 × 0.005 = $18.81. The remaining part of the payment, $386.66 - $18.81 = $367.85, goes toward the principal.
To calculate the monthly payment for a 60-month motorcycle loan at a 5.76% APR, we use the loan payment formula. The calculation yields a monthly payment of approximately $176.05.
Lastly, to find the initial deposit needed for a series of tuition payments, we use the future value of an annuity formula. The calculation shows the required initial deposit would be approximately $16,036.75.