what is the weight of bond paper
The way we talk about paper in the United States is amazingly convoluted. The short answer is that 500 sheets of bond paper with a size of 17 by 22 have a weight of 20 pounds. The manufacturer would cut a sheet that big into four letter-size sheets, so a 500-sheet ream of 20-pound bond paper weighs 5 pounds. If it was something other than bond paper, then the size of the standard sheet used to determine the weight might be different. For example, Bristol paper is heavier and stiffer (like the paper in a manila file folder). Its standard sheet size is 22.5 by 28.5.