This year Waterways is considering buying five new backhoes to replace the backhoes it now has. The new backhoes are faster, cost less to run, provide for more accurate trench digging, have comfort features for the operators, and have $1-$year maintenance agreements to go with them. The old backhoes are working just fine, but they do require considerable maintenance. The backhoe operators are very familiar with the old backhoes and would need to learn some new skills to use the new backhoes.

The following information is available to use in deciding whether to purchase the new backhoes.

$\backslash$table$[[,$Old Backhoes,New Backhoes$],[$Purchase cost when new,$$90,000,$$$200,000$

Find net present value, payback period, profitability index, IRR factor,