Robert Krulwich/NPR. Add all of us up, all 7 billion human beings on earth, and clumped together we weigh roughly 750 billion pounds. That, says Harvard biologist E.O. Wilson, is more than 100 times the biomass of any large animal that's ever walked the Earth. And we're still multiplying.
Paper. The average price for 20 lb printer paper seems to run between $4 and $6 dollars for average quality paper, so we will use $5 for 500 sheets-or a penny a page, for both inkjet and laser printers. This is the type of paper used to print text, or text with some basic business graphics.nk for the Deskjet costs $15 for the black 60 cartridge, with an estimated page yield of 200 pages. The tri-color cartridge is $20, and has an approximate yield of 165 pages. Cost per page of black text is $15.00/200: $.075, or 7.5 cents a page for text.
Professional painters provide estimates primarily based on the square footage of your home. Painting an average home between 500 and 1,500 square feet can cost between $1,000 and $3,000. However, factors such as number of stories and ease of access can also affect the overall price.