Many analyses using data such as those given in the following table focus on the items that make up the top $80\%80\%$ of the total cost.

Cost Analysis

Cost center

Annual cost Percent of

total Cumulative

percent

Parts and materials $$1,325,000\mathrm{.}00$$$1,325,000\mathrm{.}0031\mathrm{.}17\%31\mathrm{.}17\%31\mathrm{.}17\%31\mathrm{.}17\%$

Manufacturing equipment $$900,500\mathrm{.}00$$$900,500\mathrm{.}0021\mathrm{.}19\%21\mathrm{.}19\%52\mathrm{.}36\%52\mathrm{.}36\%$

Salaries $$575,000\mathrm{.}00$$$575,000\mathrm{.}0013\mathrm{.}53\%13\mathrm{.}53\%65\mathrm{.}89\%65\mathrm{.}89\%$

Maintenance $$395,000\mathrm{.}00$$$395,000\mathrm{.}009\mathrm{.}29\%9\mathrm{.}29\%75\mathrm{.}18\%75\mathrm{.}18\%$

Office lease $$295,000\mathrm{.}00$$$295,000\mathrm{.}006\mathrm{.}94\%6\mathrm{.}94\%82\mathrm{.}12\%82\mathrm{.}12\%$

Warehouse lease $$250,000\mathrm{.}00$$$250,000\mathrm{.}005\mathrm{.}88\%5\mathrm{.}88\%88\mathrm{.}00\%88\mathrm{.}00\%$

Insurance $$180,000\mathrm{.}00$$$180,000\mathrm{.}004\mathrm{.}23\%4\mathrm{.}23\%92\mathrm{.}24\%92\mathrm{.}24\%$

Benefits and pensions $$130,000\mathrm{.}00$$$130,000\mathrm{.}003\mathrm{.}06\%3\mathrm{.}06\%95\mathrm{.}29\%95\mathrm{.}29\%$

Vehicles $$125,000\mathrm{.}00$$$125,000\mathrm{.}002\mathrm{.}94\%2\mathrm{.}94\%98\mathrm{.}24\%98\mathrm{.}24\%$

Research $$75,000\mathrm{.}00$$$75,000\mathrm{.}001\mathrm{.}76\%1\mathrm{.}76\%100\mathrm{.}00\%100\mathrm{.}00\%$

Total $$4,250,500\mathrm{.}00$$$4,250,500\mathrm{.}00100\mathrm{.}00\%100\mathrm{.}00\%$

Which items make up the top $80\%80\%$ in our cost analysis data? $($Note that you will not be able to answer this question for exactly $80\%,80\%,$ so use the closest percent above or below.$)$