CARACAS — With her arms full of $11.87 worth of bananas, red peppers and onions, an elderly woman at a produce stand in western Caracas approaches vendor Walquiria Garcia and offers to pay with a $10 or $20 bill. A flustered Garcia disappears into a closet, re-emerges, takes the $10 note and scribbles, “owes $1.87” […]