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

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