when $100 actually equals $131

Alec recently took $100 from my purse. He probably put it in his wallet but then he lost his wallet (or it was stolen). Ouch! I can't really afford to lose $100.

Unfortunately, in this case, I'm not just out the $100. It cost me $5 for Alec's new school ID. It cost me another $18 for Alec's new State ID card. Then it cost me another $8 for a new wallet for Alec.

Thus, in a math phenomenon, $100 = $131. (If only that conversion rate worked in my favor!)