You work for a power distribution company with a large regional presence. Every year your team spends $420000 per year on inspection of wooden poles in mid-west of Western Australa Assume your corporate real discount rate is 6% Perform your calculations in in real terms Assume the conventions for when, in ime, investment is made and annual costs are charged that have been used in the OENG5807 pre-work materials and workshop. Eg capital in invested at time zoro a) What is the not present cost over the next 5 years of continuing to inspect the wooden polos?: (1 mark) Express your answer in milione of Sto Sdp and do not put a $ symbol in your answer b) You are reviewing a capital investment proposal to replace wooden poles with metal poles. It is anticipated that these metal poles will only require Inspection once every 5 years. So the first inspection is in year 5 of the cost model: (1 mark) What is the net present cost over the next 5 years of replacing all the wooden poles in the mid-west if the capital cost of replacing the wood with metal is $900000? Express your answer in millions of sto Sdp and do not put a $ symbol in your answer. You work for a power distribution company with a large regional presence. Every year your team spends $420000 per year on inspection of wooden poles in mid-west of Western Australa Assume your corporate real discount rate is 6% Perform your calculations in in real terms Assume the conventions for when, in ime, investment is made and annual costs are charged that have been used in the OENG5807 pre-work materials and workshop. Eg capital in invested at time zoro a) What is the not present cost over the next 5 years of continuing to inspect the wooden polos?: (1 mark) Express your answer in milione of Sto Sdp and do not put a $ symbol in your answer b) You are reviewing a capital investment proposal to replace wooden poles with metal poles. It is anticipated that these metal poles will only require Inspection once every 5 years. So the first inspection is in year 5 of the cost model: (1 mark) What is the net present cost over the next 5 years of replacing all the wooden poles in the mid-west if the capital cost of replacing the wood with metal is $900000? Express your answer in millions of sto Sdp and do not put a $ symbol in your