Given:
Loan Amount: $15,000
Loan Terms: 4 years = 48 months = n (convert years to months)
Interest Rate: 4% =
Monthly Loan Payment Formula:
Monthly Loan Payment =
Substitute given values into Monthly Payment Formula:
Monthly Loan Payment =
Monthly Loan Payment = $338.69 ( rounded to two decimal places)
Notes:
Total Cost = Monthly Loan Payment * Number of Payments
Total Cost = $338.69 * 48 = $16,257.12
Interest Cost = Total Cost – Loan Amount
Interest Cost = $16,257.12 – $15,000 = $1,257.12
Loan Amount: $15,000
Loan Terms: 4 years = 48 months = n (convert years to months)
Interest Rate: 4% =
4/100
= 0.04 = r (convert percent to a decimal)Monthly Loan Payment Formula:
Monthly Loan Payment =
Loan Amount *
r
/
12
/
1 – ( 1+ r/12
) -n
Substitute given values into Monthly Payment Formula:
Monthly Loan Payment =
15,000 *
0.04
/
12
/
1 – ( 1+ 0.04/12
) -48
Monthly Loan Payment = $338.69 ( rounded to two decimal places)
Notes:
Total Cost = Monthly Loan Payment * Number of Payments
Total Cost = $338.69 * 48 = $16,257.12
Interest Cost = Total Cost – Loan Amount
Interest Cost = $16,257.12 – $15,000 = $1,257.12