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?
(11x17) x 24 / 25x38 = about 4.72 pounds. If you pick up a ream of letter-size 8.5x11 printer paper at the office supply store and the packaging says it is 20 lb. paper, that doesn't mean the ream weighs 20 pounds. The weight of 500 sheets of the bond paper at its basic size of 17 x 22 inches is 20 pounds. Using the above formula, that ream of 20 lb. paper (bond paper has a basic size of 17x22) actually weighs 5 pounds, not 20. (8.5x11) x 20 / 17x22 = 5 pounds.