Machine $A$, machine $B$, and machine $C$, working together at their respective constant rates, can complete a

Machine $A$, machine $B$, and machine $C$, working together at their respective constant rates, can complete a certain job in $24$ hours. How many hours would it take machine A, working alone at its constant rate, to complete the same job?

1) Machines $B$ and $C$, working together at their respective constant rates, can complete the job in $36$ hours

2) Machines $A$ and $C$, working together at their respective constant rates, can complete the job in $48$ hours

OA A

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