Question
David and Peter take 3 days to assemble a toy house. Peter and Glen take 6 days to build the same house while David and Glen take only 4 days. How many complete days would the three of them take to build the same toy house?
4 m

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David and Peter take 3 days to assemble a toy house. Peter and Glen take 6 days to build the same house while David and Glen take only 4 days. How many complete days would the three of them take to build the same toy house?