Question
Warren and Jack take 4 days to assemble a toy car. Jack and Howard take 6 days to build the same car while Warren and Howard take only 3 days. How many complete days would the three of them take to build the same toy car?
4 m

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Warren and Jack take 4 days to assemble a toy car. Jack and Howard take 6 days to build the same car while Warren and Howard take only 3 days. How many complete days would the three of them take to build the same toy car?