Alex is considering buying a new lawnmower. He has a choice between a Kobalt mower and a Craftsman mower. Alex has a MARR of 9%. The salvage value of each mower at the end of its service life is zero. Kobalt Craftsman First Cost $450 $300 Life 10 years 7 years Annual Gas $70 $50 Annual Maintenance $30 $25 Calculate the Present Worth for both models based on the least common multiple (LCM) of the service lives. (Note: For this problem, LCM=70 years) PW(Kobalt for 70 years) = 3,637.466 PW(Kobalt for 70 years) = 3,376.314 PW(Kobalt for 70 years) = 3,061.513 0 PW(Kobalt for 70 years) = 2,323.245 o PW(Kobalt for 70 years) = 1,885.599 PW(Craftsman for 70 years) = 2,923.977 PW(Craftsman for 70 years) = 2,453.582 PW(Craftsman for 70 years) = 2,109.438 O PW(Craftsman for 70 years) = 1,650.203 PW(Craftsman for 70 years) = 1,491.984