[Avodah] arithmetic question

[Micha Berger]

On Sun, Jul 21, 2013 at 11:01:02AM +0300, Eli Turkel wrote:
: * one-sixth of the starting price --
:     1/6 * 210 = 35, so both 210 + 35 = 175 and 210 - 35 = 245 are ona'ah.
: 
: * one-sixth of the final price --
:     6/5 * 210 = 252 --> 1/6 * 252 = 42 = 252 - 210, so 252 is ona'ah; and
:     6/7 * 210 = 180 --> 1/6 * 180 = 30 = 210 - 180, so 180 is ona'ah.
...
: Question what happens if the price charged is 250
: This is greater than 1/6 based on the starting price and so the deal is off
: (mekhat taut)
: This is less than 1/6 based on the final price and so the deal stands as is

To phrase it as the SMA would:
There was ona'ah in the exhange of money, but not the exchange of product.

I think that means the deal is on, but the extra money has to be refunded.
The buyer owns the grain, and gets the overcharge back.

The deal is on, because he underreceived by 21/25, which is more than
5/6 of the PRODUCT paid for.
But the exchange of the extra money isn't binding, because he overpaid
by 25/21 or which is more than +1/6 of the MONEY he should have for
that product.

Tir'u baTov!
-Micha

-- 
Micha Berger             Take time,
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