In the process of researching new equipment, Tamarisk settled on two seemingly viable alternatives:

A one$-$time investment today of $$40,000,$ which should generate net after$-$tax cash inflows of $$19,000$ per year for the next $3$ years.

A one$-$time investment today of $$48,000,$ which should generate net after$-$tax cash flows of $$30,000$ per year for the next $3$ years.

Both amounts already include the depreciation tax shield. Tamarisk's minimum required return is $8\%.$

$($a$1)$ Calculate the NPV and IRR for both of these investments. $($Round present value factor calculations to $5$ decimal places, e$.$g$.1\mathrm{.}25124$