Yogurt... The best deal may not be the sale

My sister did some math while shopping for yogurt. I can't do anything but shop from my list, forget the math! If I havent done my figures before I go, then I should just skip that deal! But her brain was working overtime and she shared this with me:

Publix brand yogurt = 10/5.50 = .55 each
Activia on sale = 3 4-packs for 6.00 or 12/6.00 = .50 each

Activia NOT on sale = 12 pack boxes for 4.99
-$1.00 off coupon from 7/10 ss (?)

Total = 12/3.99 or .33 each.

So even NOT on sale, the larger packs of Activia are a better deal!!

TIP: Always carry a calculator with you (it also helps to have a pen and some scrap paper too!)