The Bornean orangutan is listed as Endangered and numbers approximately 41,000, while the Sumatran orangutan is considered Critically Endangered with an estimated population of 7,500. A century ago, more than 230,000 orangutans likely roamed in the wild.
Making the world better, one answer at a time. If you go to the United States Postal Service web-stie, you will find that one US First class stamp ($0.42) will cover the cost to mail a letter that weighs up to 1 ounce, about 28.35 grams. Thus, the average weight of a letter is one ounce or less. If you go to the United States Postal Service web-stie, you will find that one US First class stamp ($0.42) will cover the cost to mail a letter that weighs up to 1 ounce, about 28.35 grams.  Minor edit?
Next to Vellum 17 is Vellum 27, which weighs .054 pounds or 24.493 grams per piece. The weight of a piece of Vellum 29 is .058 pounds or 26.308 grams while Vellum 30 weighs 0.06 pounds or 27.215 grams per piece. Solid Text 60 as well as Parchment Text 60 weigh .12 pounds or 54.431 grams.s an example, a ream of 20 pounds paper with the size of 8.5 by 11 inches has a weight of five pounds. Below are the weights of the different types of the material that are commonly used for writing as well as for printing.