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QUESTION
Working alone, Carol can paint 1 room in 4 hours. David, working alone, can paint the same sized room in 6 hours. if they work together, how long would it take them to paint that sized room?
Working alone, Carol can paint 1 room in 4 hours. David, working alone, can paint the same sized room in 6 hours. if they work together, how long would it take them to paint that sized room?
