Average rate of return method, net present value method, and analysis for a service company

The capital investment committee of Iguana Inc. is considering two capital investments. The estimated operating income and net cash flows from each investment are as follows:

$\backslash$table$[[$Year$,\backslash$table$[[$Robotic Assembler$],[$Operating Income$]],\backslash$table$[[$Warehouse$],[$Robotic Assembler$],[$Net Cash Flow$]],\backslash$table$[[$Operating$],[$Income$]],\backslash$table$[[$Warehouse$],[$Net Cash Flow$]]],[1,$$$35,000,$$$65,000,$$$21,000,$$$51,000$