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Chips ahoy $0.18 per oz.
1) Let's write it down, since the point here is what's the best deal we need to find out the unit rate for each one. Let's set a proportion:
$2.98 ----------- 15.5 oz
x -------------- 1 oz
Cross multiplying it:
15.5x = 2.98 * 1 Divide both sides by 15.5
x= 0.192
So $0.19 per oz.
Chips Ahoy:
$2.50------------14 oz
y --------------1
14y= 2.50
y=0.1785 rounding it to the nearest hundredth 0.18
Then $0.18 per oz
So the better deal, is buying Chips Ahoy.