Problem $9$

A land development company $is$ considering the purchase $of$ earth$-$moving equipment. This

equipment will have $an$ estimated first cost $of$ $$190,000,$ a salvage value $of$ $$70,000,$ a life $of$

$10$ years, a maintenance cost $of$ $$40,000$ per year, and $an$ operating cost $of$ $$260$ per day.

Alternatively, the company can rent the necessary equipment for $$1100$ per day and hire $a$

driver $at$ $$180$ per day. $(a)If$ the company's MARR $is10\%$ per year, how many days per year

must the company need the equipment $in$ order $to$ justify its purchase?