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It is a classic Ordinary Annuity saving plan. The general formula is
FV = ,
where FV is the future value of the account; P is annual payment (deposit); r is the annual percentage yield presented as a decimal;
n is the number of deposits (= the number of years, in this case).
From this formula, you get for for the annual payment
P = . (1)
Under the given conditions, FV = $50,000; r = 0.05; n = 10. So, according to the formula (1), you get for the annual payment
P = = $3975.23.
Answer. The necessary annual deposit value is $3975.23.
Note that of projected $50,000 the total of Xiao Li's deposits will be only 10 times $3975.23, i.e. 39,752.30 dollars.
The rest is what the account will earn/accumulate/accrue in 10 years.
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On Ordinary Annuity saving plans, see the lessons
- Ordinary Annuity saving plans and geometric progressions
- Solved problems on Ordinary Annuity saving plans
in this site.