Question
Adam and Bennet builds a toy car in 6 hours.
Bennet and Chan builds a toy car in 8 hours.
Chan and Adam builds a toy car in 2 hours.
How long does it take for Adam, Bennet and Chan to build a toy car together?
3 m

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Adam and Bennet builds a toy car in 6 hours.
Bennet and Chan builds a toy car in 8 hours.
Chan and Adam builds a toy car in 2 hours.
How long does it take for Adam, Bennet and Chan to build a toy car together?