1. GridCo Analytics needs to purchase new land surveying equipment. GridCo's after ta): MARE is 9% and the corporate tax rate is 42%. Surveying equipment is a [ID-i Class 3 asset. The remaining data are contained in the table below. First Cost Economic Life Annual Net Salvage Value {rears} Savings $65,000 5331100 M $90,000 5301100 {a} Using the annual worth method, which model should BlastCo buy? {5 marks] lb} What is the approximate after tax IRR of each model? [5 marks} {c} What is the exact after tax IRR of each model? [5 marksl