Question
Adriel and Baxter builds a toy car in 2 hours.
Baxter and Colin builds a toy car in 9 hours.
Colin and Adriel builds a toy car in 4 hours.
How long does it take for Adriel, Baxter and Colin to build a toy car together?
3 m

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Adriel and Baxter builds a toy car in 2 hours.
Baxter and Colin builds a toy car in 9 hours.
Colin and Adriel builds a toy car in 4 hours.
How long does it take for Adriel, Baxter and Colin to build a toy car together?