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发帖数: 861 | 1 To find out how may payments it takes to pay off a debt, the general formula
can be:
n = -log(1-i*B/p) / log(1+i)
n: how many payments
i: interest rate per payment period
B: initial balance
p: amount of each payment
OK, the question is: the credit card company does not charge interest if you
pay full, while this formula does not consider that. If you use $2000 for
both B and p here, you will get a number larger than 1 if the interest rate
is not zero. But in real life, if you pay $2000 to a cred |
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