The Mathematics of Money

(Darren Dugan) #1

  1. I have $1,575.19 in my savings account right now. It earns 3.6% interest. If I deposit $200 into this account each
    month, how much will I have in 3 years?

  2. Find the future value of an “annuity” of $500 per year at 9% for 20 years, assuming that the 12th and 15th annual
    payments are $850 instead of $500.

  3. Leslie deposits $400 each month for 10 years into an investment account. She then increases her deposits to $500 per
    month. If her account earns 8.4%, how much will she have at the end of 16 years?

  4. Pat deposited $2,000 per year for 25 years into an account earning 9.35%. He missed his scheduled payment in years
    10 and 15, and deposited an extra $3,000 in year 20. Find the future value of his account.


G. Additional Exercises


  1. Suppose I deposit $125 per month for 10 years into an account earning 6%. For the next 15 years I increase my
    deposits to $150 per month, then for the next 5 years after that I decrease my deposits to $80 per month. Find my
    total future value.


Exercises 4.7 201

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