Who is the fastest among the three workers \(a, b\) and \(c?\)

[AAPL]

Who is the fastest among the three workers \(a, b\) and \(c?\)

1) \(a\) and \(b\) together take \(12\) hours to complete a job

2) \(a, b\) and \(c\) working together can complete the job in \(6\) hours

OA E