$5\mathrm{.}47$ Consider the two mutually exclusive service projects in Table P$5\mathrm{.}47.$

Problens

$289$

$($a$)$ What assumption$($s$)$ do you need in order to compare a set of mutually exclusive service projects with unequal service lives?

$($b$)$ With the assumption$($s$)$ defined in part $($a$)$ and using $10\%,$ determine which project should be selected.

$($c$)$ If your analysis period $($study period$)$ is just three years, whit should he the sitwaye vilue of project $A2$ at the end of yeit $3$ to mike the two altematives economically indiferen?

TABLE P$5\mathrm{.}47$

$\backslash$table$[[,$Project's Cush flow$],[n,A,B$