Given:
Loan Amount: $5,250
Loan Terms: 18 months = n
Interest Rate: 3.75% =
Monthly Loan Payment Formula:
Monthly Loan Payment =
Substitute given values into Monthly Payment Formula:
Monthly Loan Payment =
Monthly Loan Payment = $300.40 ( rounded to two decimal places)
Notes:
Total Cost = Monthly Loan Payment * Number of Payments
Total Cost = $300.40 * 18 = $5,407.20
Interest Cost = Total Cost – Loan Amount
Interest Cost = $5,407.20 – $5,250 = $157.20
Loan Amount: $5,250
Loan Terms: 18 months = n
Interest Rate: 3.75% =
3.75/100
= 0.0375 = 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 =
5,250 *
0.0375
/
12
/
1 – ( 1+ 0.0375/12
) -18
Monthly Loan Payment = $300.40 ( rounded to two decimal places)
Notes:
Total Cost = Monthly Loan Payment * Number of Payments
Total Cost = $300.40 * 18 = $5,407.20
Interest Cost = Total Cost – Loan Amount
Interest Cost = $5,407.20 – $5,250 = $157.20