Question
Fabian and Flynn take 4 days to assemble a toy plane. Flynn and Henry take 6 days to build the same plane while Fabian and Henry take only 3 days. How many complete days would the three of them take to build the same toy plane?
4 m

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Fabian and Flynn take 4 days to assemble a toy plane. Flynn and Henry take 6 days to build the same plane while Fabian and Henry take only 3 days. How many complete days would the three of them take to build the same toy plane?