(Unknown Periods and Unknown Interest Rate)
Consider the following independent situations. (Hint: Use tables in text.)
(a) Mark Yoders wishes to become a millionaire. His money market fund has a balance of $148,644 and has a guaranteed interest rate of 10%. How many years must Mark leave that balance in the fund in order to get his desired $1,000,000?
(b) Assume that Elvira Lehman desires to accumulate $1 million in 15 years using her money market fund balance of $239,392. At what interest rate must Elvira's investment compound annually?