How to solve using calcuator. Please write the equation.

Two mutually exclusive alternatives for office building refrigeration and air conditioning are being investigated. Their relevant costs and lives are summarized as follows: If the hurdle rate $($MARR$)$ is $15\%$ per year and the study period is $18$ years, which chilling system should be recommended?

$\backslash$table$[[,\backslash$table$[[$Absorption$],[$Chilling $($AC$)]],\backslash$table$[[$Compression$],[$Chilling $($CC$)]]],[$Capital Investment,$$60,000,$$$80,000],[\backslash$table$[[$Annual Operating$],[$Expenses$]],40,000,32,000],[\backslash$table$[[$Salvage $($market$)],[$value$]],10,000,0],[$Useful Life,$6$ years,$9$ years$]]$

Step $4$

Compute of EUAC for both types of compression $($Absorption Chilling $($AC Compression Chilling $($CC$))$ is calculated below:

EUACAC$=-$$$40,000-$$$60,000(\frac{A}{P},15\%,6)+$$$10,000(\frac{A}{F},15\%,6)$

$=-$$$40,000-$$$60,000(0\mathrm{.}2642)+$$$10,000(0\mathrm{.}1142)$

$=-$$$54,710$

EUACCC$=-$$$32,000-$$$80,000(\frac{A}{P},15\%,9)+0$

$=-$$$32,000-$$$80,000(0\mathrm{.}2096)$

$=-$$$48,768$

Thus, the EUAC for AC and CC is $$54,710$ and $-$$$48,768$ respectively.

On the basis of EUAC, Chilling Compression should be recommended.