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A man decided to paint his house himself after office hours. He can paint 25 m2 per hour on average. It takes him 15 mins

A man decided to paint his house himself after office hours. He can paint 25 m2 per hour on average. It takes him 15 mins to prepare his materials and 20 minutes to keep the materials after painting. If there are 900 m2 to be painted, how long will it take him to paint his house if he devotes 2 and 1/2 hours each day?

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