SOLUTION: I place 20 pounds in a box. So do you. Now the box contains 40 pounds, and we both know it. I sell the box to you for 30 pounds. And we both walk away with a 10 pounds

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: I place 20 pounds in a box. So do you. Now the box contains 40 pounds, and we both know it. I sell the box to you for 30 pounds. And we both walk away with a 10 pounds       Log On