The answers are as followed, please show how c$)$ was calculated. please also show how the Initial UCC in a$)$ was calculated. a$.$ Year $|$ Initial UCC $|$ CCA $|$ Ending UCC

$1|30000|30000*20\%=6000|24000$

$2|54000|54000*20\%=10800|43200$

$3|43200|43200*20\%=8640|34560$

$4|34560|34560*20\%=6912|27648$ b$.$OCF$\_1=0\mathrm{.}6*(20000-8000)+0\mathrm{.}4*6000=9600$ OCF$\_2=0\mathrm{.}6*(24000-9600)+0\mathrm{.}4*10800=12960$ OCF$\_3=0\mathrm{.}6*(28800-17280)+0\mathrm{.}4*8640=10368$ OCF$\_4=0\mathrm{.}6*(34560-20736)+0\mathrm{.}4*6912=11059\mathrm{.}2$ c$.$NPV $=-26688\mathrm{.}9$ Therefore, the firm should not take the project.