A contractor estimates purchase of a new bulldozer will increase earnings $20,000 per year for each of the next 10 years. During this same time the estimated increase in expense is $2000 per year. If...

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Extracted text: A contractor estimates purchase of a new bulldozer will increase earnings $20,000 per year for each of the next 10 years. During this same time the estimated increase in expense is $2000 per year. If an annual interest of 10% is used and a salvage value of $100,000 is assumed at the end of Year 10, what amount could be spent now on the bulldozer? Note the description above asks for the determination of a Present Worth.