Q3- Salim is considering the purchase of a backhoe for his pipeline contracting firm. The machine will cost $150 000,last six years with a salvage value of $50 000, and reduce annual maintenance, insurance, and labor costs by $30 000 per year. The MARR is 9 percent and Salim's corporate tax rate is 55 percent. What is the approximate after-tax IRR? Should Salim buy the backhoe