Question 1140784
 Kelly and Sam plan to send their daughter to college.
 To pay for this they will contribute 10 equal yearly payments to an account bearing interest at the APR of 4.2%, compounded annually.
 Four years after their last contribution, they will have begin the first of five, yearly withdrawals of $49,300 to pay the college expenses.
 How large must their yearly contributions be?
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there are 3 stages to this problem, the 10 yr accumulation phase, the 4 yr earning phase, the 5yr payout phase.
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To the nearest $
Start with the last phase, how much will you need initially to pay 49.3k a yr for 5 years earning 4.2%?
Using the finance feature on my Ti83 I got: $218,247
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The earning phase, how much will need initially, to get $218,247, earning 4.2% in 4 yrs.
Again using the finance feature I got: $185,130
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The accumulation phase, what will have have to deposit annually to accumulate $185,130
Using the same method: $15,277 a year for 10 yrs earning 4.2% must be deposited
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Each one of these calculations has a rather complex formula to calculate it, is that what you want?