Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in

Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in
1). 15 days
2). 18 days
3). 20 days
4). 24 days

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