| Re: Math Formula Question - Need Ideas [message #184521 is a reply to message #184519] |
Sun, 05 January 2014 16:40   |
Denis McMahon
Messages: 634
Registered: September 2010
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Senior Member |
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On Sat, 04 Jan 2014 20:22:31 -0500, Jerry Stuckle wrote:
> On 1/4/2014 7:54 PM, Denis McMahon wrote:
>> On Sun, 05 Jan 2014 00:26:08 +0000, Adrienne Boswell wrote:
>>
>>> I have a math question to which I can't find the answer. Here is the
>>> scenario:
>>>
>>> Someone goes to a store and has $100.00 worth of items. The merchant
>>> gives the customer a 10% discount, so only $90.00 is sent to the bank.
>>> Of the original amount, $10.00 goes to the customer for the discount,
>>> $80.00 goes to the merchant, $10.00 goes for a processing fee. But
>>> those amounts have to be calced on the original amount, not what the
>>> bank got. I need a formula to find the original amount if I have the
> Actually, Denis, since the original statement was the processor gets
> $10, he would get $10/$90 or 11.11% of the sale.
Yeah, I took the statement "those amounts have to be calced on the
original amount" as implying that the processing fee was being calculated
on the pre-discounted total, as was the discount.
Which is what led me to querying the nature of the processing fee, and
whether given it's nature it's being calculated at the right point,
because I would expect that a [payment] processing fee would normally be
related to the amount of the actual transaction, which as you say is
$10 / $90 in this case.
I'm also wondering if Adrienne is perhaps using the term "processing fee"
in a way other than that which I expect it to be used - we do get the
"some people use a slightly different english" problem here occasionally.
eg if "processing" was something like shipping and packing, $10 per
order, then it would be $10 regardless of the original amount or the
discounter amount, but then I wouldn't expect the processing fee to be
calculated from the transaction cost at all, I'd expect it to be mainly a
function of the total volume / weight and possibly item count of the
goods involved.
--
Denis McMahon, denismfmcmahon(at)gmail(dot)com
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