To answer this question, we must make some assumptions about meanings. If we are talking about U.S. coinage (pennies) to weight (pound), which was my assumption, then the answer can come from a quick check on the Internet (or with real pennies and a good scale). A Web site I found shows that depending on how many pennies are pre-1982, you can have between 146 and 181 pennies in a pound. The only other choice I can think of for an answser to this would be if we are talking about pennies in an English Pound, which would not consider weight (pound), but would, instead, consider only value (Pound). That would make it 100, right?