How many sheets of paper, of the same size and quality, is in a metric quire?
Units of paper quantity Simon Winchester, in "The Surgeon of Crowthorne", cites a specific number, defining quire as "a booklet eight pages thick." Several European words for quire keep the meaning of "book of paper": Ger. "Buch von Papier", Dan. "bog papir", Du. "bock papier". In blankbook binding, "quire" is a term indicating 80 pages. A ream of paper is a quantity of sheets of the same size and quality. International standards organizations define the ream as 500 identical sheets. This ream of 500 sheets (20 quires of 25 sheets) is also known as a 'long' ream, and is gradually replacing the old value
Letter (paper size) "official" "Government Letter" size, , was used in government, while paper was standard in most other offices. In the U.S., paper density is usually measured in "pounds per ream" (of 500 sheets). Typical Letter paper has a basis weight of paper of – the weight of 500 sheets (a ream) of paper at and at 50% humidity. One ream of 20-pound Letter-sized paper weighs , and a single Letter-sized sheet of 20-pound paper weighs , which is equivalent to 75.19 g/m. Some metric information is typically included on American ream packaging. For example, 20-pound paper is also labeled as 75