A man is buying a new eco-friendly electric riding mower. There will be no maintenance cost during the first 2 years because the mower is sold with 2 years free maintenance. For the third year, the maintenance is estimated at $100. In subsequent years the maintenance cost will increase by $50 per year. (a) How much would need to be set aside now at 8% interest to pay the maintenance costs on the tractor for the first 6 years of ownership? (b) What are the advantages and disadvantages of electric powered riding mowers?

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