Question
Seth and Vincent take 2 days to assemble a toy plane. Vincent and Bryan take 4 days to build the same plane while Seth and Bryan take only 2 days. How many complete days would the three of them take to build the same toy plane?
4 m

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Seth and Vincent take 2 days to assemble a toy plane. Vincent and Bryan take 4 days to build the same plane while Seth and Bryan take only 2 days. How many complete days would the three of them take to build the same toy plane?