Math Problem Statement
Suppose you want to have $400,000 for retirement in 25 years. Your account earns 6% interest.
a) How much would you need to deposit in the account each month?
$
b) How much interest will you earn?
Solution
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Math Problem Analysis
Mathematical Concepts
Compound Interest
Ordinary Annuity
Future Value
Formulas
Future Value of an Ordinary Annuity: FV = P × [(1 + r)^n - 1] / r
Monthly Interest Rate: r = Annual Interest Rate / 12
Total Deposits: P × n
Interest Earned: FV - Total Deposits
Theorems
Annuity Theorem
Compound Interest Theorem
Suitable Grade Level
Grades 11-12 (High School) or College
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