Rust Industrial Systems is trying to decide between two different conveyor belt systems. System A costs $$236,000,$ has a four$-$year life,

and requires $$74,000$ in pretax annual operating costs. System B costs $$336,000,$ has a six$-$year life, and requires $$68,000$ in pretax

annual operating costs. Both systems are to be depreciated straight$-$line to zero over their lives and will have zero salvage value.

Suppose the company always needs a conveyor belt system; when one wears out, it must be replaced. Assume the tax rate is $21$

percent and the discount rate is $9$ percent. Calculate the EAC for both conveyor belt systems.

Note: Your answers should be negative values and indicated by minus signs. Do not round intermediate calculations and round

your answers to $2$ decimal places, e$.$g$.,32\mathrm{.}16.$