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Retirement Planning. Kenna is 30 years old. She plans to retire at age 55 and by then wants to have saved a sum of money that will allow her to withdraw $700 per month for 25 more years (until age 80), at which time the sum will be depleted (amortized). Assume a fixed annual interest rate of 5%, compounded monthly for the entire duration.
a. Find the amount of money Kenna will need at age 55.
b. Find the monthly deposit Kenna needs to make in order to reach this sum, assuming that she starts saving immediately.
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