A master painter can paint 110 square yards of surface area with a roller in 1 hour, while his apprentice can paint 85 square feet of surface area per hour with a brush . Together they are painting a building with a surface area of 5100 square feet. After painting for 4. 1/4 hours , the master painter lets the apprentice Finnish the job. Approximately how long will it take the apprentice to complete the project using a brush
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