Fox Enterprise is considering six possible construction projects over the next 4 years. Fox may undertake any of the projects in part or in full. Partial execution of a project will pro-rate both performance and cash outlays. The returns (present value) and cash outlays for the projects are given in the following table:

Cash investment ($1000) Project Ano 1 Ano 2 Ano 3 Ano 4 Returns ($1,0 1 10.50 14.40 2.20 2.40 32.40 2 8.30 12.60 9.50 3.10 35.80 3 10.20 14.20 5.60 4.20 17.75 4 7.20 10.50 7.50 5.00 14.80 5 12.30 10.10 8.30 6.30 18.20 9.20 7.80 6.90 5.10 12.35 Available 60.00 70.00 35.00 20.00 funds($1000)