Question
Aaron and Byron builds a toy car in 2 hours.
Byron and Curry builds a toy car in 4 hours.
Curry and Aaron builds a toy car in 8 hours.
How long does it take for Aaron, Byron and Curry to build a toy car together?
3 m

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Aaron and Byron builds a toy car in 2 hours.
Byron and Curry builds a toy car in 4 hours.
Curry and Aaron builds a toy car in 8 hours.
How long does it take for Aaron, Byron and Curry to build a toy car together?