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Problem 1. (25%) Mark is looking to buy a new snowblower. He has a choice between two snowblowers A and B. Mark has a MARR of 8%. The costs associated with each snowblower are shown in the table below. Snowblower A First cost $1500 Annual maintenance $50 increasing by 15% per year Annual gas $100 Service life 5 Salvage value $200 Snowblower B $2250 $30 increasing by $20 per year $150 10 $300 (a) Using the information above, determine which alternative is preferable. Use a present worth comparison and the least common multiple of the service lives. (b) For a five-year study period, what salvage value for snowblower B would result in its being the preferred choice