Peter wallpapered a wall that was 9 feet wide and 8 feet high. He had 27 square feet of wallpaper left over. How many square fee
2 answers:
You might be interested in
Multiply the first equation by 1.5, to get:
Subtract the second equation from this:
Substituting into the first equation:
Therefore, it takes 1/12 minute to print a black-and-white page, and 1/8 minute to print a colored page.
Subtract the second equation from this:
Substituting into the first equation:
Therefore, it takes 1/12 minute to print a black-and-white page, and 1/8 minute to print a colored page.