Correct Answer: 48 days
Explanation:
∵ Work of (Ganesh, Ram and Sohan) for 1 day = 1/16
and work of Ganesh and Ram for 1 day = 1/24
⇒ Work of Sohan for 1 day = 1/16 - 1/24 = 1/48
∴ Sohan alone will complete the work in = 1/(1/48) days = 48 days.
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