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"Mr Plow" is a small snow plowing company with two employees, Homer and Barney. When both are driving
their snow plows, they can finish plowing the driveways and parking lots of all their customers in 4.5
hours. If Barney plows the snow for all of the company's customers by himself, it takes him 1.3 hours more
than it takes Homer to plow the snow by himself. How many hours does it take Homer to plow the snow by
himself?