# math

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Saving for retirement by contributing the same amount each month from your 23rd birthday until your 65th birthday, in an account that pays a steady 4% annual interest compounded monthly.

How much will be in your fund at age 65 if you save \$100 a month?

• math -

monthly rate = .04/12 = .003333...
time from 23rd to 65th birthday = 504 months

amount = 100( 1.003333..^504 - 1)/.003333..
= \$130,517.61

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