Posted by Brooke on Tuesday, October 19, 2010 at 7:42pm.
Assuming that the two packaging contain the same food, then
24oz bag costs 1.19/24 = 0.05 /oz
36oz bag costs 2.89/36 = 0.08 / oz
So bigger packaging does not have to be cheaper.
In the supermarket, this is what I would do:
24oz costs 1.19
36oz is 50% more, 50% more of 1.19 is about 1.80 (< 2.89), so the unit price of the 36oz bag costs more.
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