Solution for Problem 9.2.2

You want to save $20,000 for a car.   How much should you deposit each month with an annual rate of 9% for 4 years in order to save for the car?

Solve

       Step

i = 0.09 ÷ 12 = 0.0075 

k = 12, r = 0.09, Monthly means 12 times a year

FV is payment = 20,000, n = 4 years

Find the Payment (or rent)

P = 347.70

You make 60 equal payments of $347.70  in order to save $35,000.
Enter 20,000 × 0.09 ÷ 12 ÷( (1 + 0.09 ÷ 12 )  xy ( 12 × 4 ) - 1)   [enter or =] in your calculator
Hint: don't round until you are completely finished with your calculations.