I was recently at Jupiters Pizza in Champaign, IL, and we were trying to figure out what to order.
We were deciding between getting individual 9 inch pizzas at $7 a piece, or splitting a couple of medium 14 inch at $14 a piece.
For fun, I wanted to know which pizza was a better value in terms of total area (as is customary, the size refers to the diameter of the pizza). Usually it is the case that larger pizzas are better values, but it is not always the case, so I like to verify.
As I was slowly making the calculation on my cell phone calculator, my friend quickly calculated the 14 inch pizzas were a better deal.
How did he figure it out so fast? Here’s the neat trick he used.
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