Freddy's Fabulous Faux Frisbee Factory consists of fifty rapid frisbee forming machines. In recent year Freddy bought new fifteen rapid frisbee forming machines as well as retired five of them, all they are resulting within: (1) Net investment of 10 machines. (2) Gross investment of 5 machines. (3) Net investment of 15 machines. (4) No economic investment.
Please help me to solve the problem of scarcity that is given above.