Given:
Loan Amount: $40,000
Loan Terms: 84 months = n
Interest Rate: 5% =
Monthly Loan Payment Formula:
Monthly Loan Payment =
Substitute given values into Monthly Payment Formula:
Monthly Loan Payment =
Monthly Loan Payment = $565.36 ( rounded to two decimal places)
Notes:
Total Cost = Monthly Loan Payment * Number of Payments
Total Cost = $565.36 * 84 = $47,490.24
Interest Cost = Total Cost – Loan Amount
Interest Cost = $47,490.24 – $40,000 = $7,490.24
Loan Amount: $40,000
Loan Terms: 84 months = n
Interest Rate: 5% =
5/100
= 0.05 = 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 =
40,000 *
0.05
/
12
/
1 – ( 1+ 0.05/12
) -84
Monthly Loan Payment = $565.36 ( rounded to two decimal places)
Notes:
Total Cost = Monthly Loan Payment * Number of Payments
Total Cost = $565.36 * 84 = $47,490.24
Interest Cost = Total Cost – Loan Amount
Interest Cost = $47,490.24 – $40,000 = $7,490.24