Question
Oscar and Zane take 5 days to assemble a toy car. Zane and Zeph take 6 days to build the same car while Oscar and Zeph 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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Oscar and Zane take 5 days to assemble a toy car. Zane and Zeph take 6 days to build the same car while Oscar and Zeph take only 3 days. How many complete days would the three of them take to build the same toy car?