Question
Wesley and Simon take 3 days to assemble a toy train. Simon and Jenson take 6 days to build the same train while Wesley and Jenson take only 4 days. How many complete days would the three of them take to build the same toy train?
4 m

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Wesley and Simon take 3 days to assemble a toy train. Simon and Jenson take 6 days to build the same train while Wesley and Jenson take only 4 days. How many complete days would the three of them take to build the same toy train?