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

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Amadeus and Brad builds a toy car in 6 hours.
Brad and Colin builds a toy car in 2 hours.
Colin and Amadeus builds a toy car in 8 hours.
How long does it take for Amadeus, Brad and Colin to build a toy car together?