A company bought a piece of equipment for $100000 3 years ago, with salvage values of $20000 after 8 years. The machine now can be sold for $35000. The annual operating cost for this equipment is $15000. A new piece of equipment can be bought for $100000 with a salvege value of $20000 after 5 years, with an annual operating cost of $5000. At MARR = 10% should we replace this equipment with a new one?