7. Your company is considering replacing an equipment that was purchased 3 ye of $20,000. The equipment was supposed to have a useful life of 8 years and zero salvage value. But the equipment is currently not reliable and can be sold now for $10,000. If retained, it will need an immediate repair of $1500 to keep it functional. The updated annual operating costs, repair costs, market values over the next 5 years is below: [10 Points] ars ago at a cost Operating costs Repair costs Market value 2 10000 4000 3000 1500 1000 0 1500 3000 3500 3800 4500 4800 4 1000 Calculate assuming firm's MARR of 12%. a) The sunk cost, if the equipment is sold now b) Annual equivalent cost for next two years for operating and keeping the equipment functional, assuming it is sold after two years from now c) The annual equivalent cost of operating and repairing the equipment for next 5 years as