It’s the time of year when we’re all chasing deals. However, if you don’t know basic math it can be hard to figure out when a deal is a deal. This week I was in a store and I overheard the following conversation:
“This sweater is thirty percent off,” said the first woman.
“But this one is fifty percent off,” said the second woman holding up a different sweater.
“Oooh. That one’s a better deal. It’s cheaper. Let’s get that one.”
After they trotted off to the register, I went behind them to check on this “deal.” The first sweater was originally $20. At thirty percent off, it was selling for $14. The second swea...