According to Venezuela's official bolivar-dollar exchange rate, the man using his money as a napkin is wasting about $0.31 (£0.20).
But on the black market, the reality is completely different. You can get 676.88 bolivars to the dollar, according to dolartoday.com. That means holding food with a 2 bolivar note costs the holder less than a third of one US cent .... http://uk.businessinsider.com