$9-20$Compute the

$($a$)$net present value,

$($b$)$internal rate of return $($IRR$),$ and

$($c$)$discounted payback period $($DPB$)$ for each of the following projects.

The firm$$s required rate of return is $14$ percent.Which project$($s$)$ should be purchased if they are independent? Which project$($s$)$ should be purchased if they are mutually exclusive? must be written out and not solved in excel $.$The firm's required rate of return is $14$ percent.

$\backslash$table$[[$Year$,\backslash$table$[[$Project$],[$Alpha$]],\backslash$table$[[$Project$],[$Beta$]]],[0,$$$(268,000),$$$(300,000)$