Jim decides to buy mayo in bulk.  He can buy 1 gallon of mayo at Costco for 8 dollars.  At the normal store, a 16-ounce bottle costs $3.  How much money does he save by buying the gallon container?
How many ounces are in a gallon? ** A gallon is 1*128=<<1*128=128>>128 ounces
How many small bottles does he need to buy? ** So he needs to buy 128/16=<<128/16=8>>8 of the small bottles
How much would the small bottles cost? ** That would cost 8*3=<<8*3=24>>24 dollars
How much money does he save by buying the gallon container? ** So he saves 24-8=$<<24-8=16>>16
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