Show A puzzling problem two south american republics let et us say peru and brazil indulging in in a commercial war refuse to regard regard one an others dollar as worth more than 90 cents A thirsty traveler finds himself near the boundary with convenient inns one on each side of the frontier he buys a ten cent drink in peru tenders a re peruvian ruvian dollar and asks for his hi 90 cents centa charge change in the form of a brazilian dollar with which lie he crosses the frontier and repeats the process in brazil getting a peruvian dollar as change and the problem is who is the loser by the series of free drinks he thus gets |