Originally posted by Superman
I once lent 50 dollars to a man and 50 dollars to a woman. And they paid in the following way:
On day one paid 20 owed 30
On day Two paid 15 owed 15
On day Three paid 10 owed 5
On day Four paid 5 owed 0
Result 50 50
Logical isn’t it. As you ...[text shortened]... owed column in the woman’s payment does not match the owed amount, why is there an extra dollar?
Because there's no reason to sum the individual "owed" numbers. The man's "owed" numbers coincidentally (or were chosen to) add up to 50, but that doesn't mean it should occur with any pay schedule. A more extreme example:
Bob pays 1 owes 49
Bob pays 1 owes 48
Already, his total "owed" sum is 97.