You’re in the grocery store on April 24th and you need cheddar, desperately. Upon reaching the back of the store you discover that there is a sale!
Excitedly, you search the shelves and find a 500g package of old, light cheddar (your favourite) for only $3.99. Beside it is a 340g package of the same cheese; it’s $2.99.
Looks simple at first, but then you see the expiration dates: May 3rd for the 500g package and May 19th for the 340g package.
Last time you bought the 500g package it took your family two weeks to eat it.
What should you buy?