Who made the decision that all gas prices should be, say, $1.599 instead of $1.60? Somebody once tried to convince me that the extra nine does NOT represent 9/10th of a cent but instead indicates that you are paying the stated price for 9/10th of a gallon, but I can’t believe that is the case.
Assuming the extra 9 does indeed represent 9/10th of a cent, where did it come from, and why is it so universal? Is it done this way outside the U.S.? And why is this the only thing that is sold this way?