What's the exchange rate among pounds, bolivars and dollars?

|The Volokh Conspiracy |

A manager places the banknotes received from customers during the day into a cardboard box in Caracas, Venezuela. (Manaure Quintero/Bloomberg News)

A pound of bolivars equals a dollar.

Okay, okay, it's an old joke (I first heard it about rubles, about 20 years ago), but it seems apt.