Sohan and Rohan can do a piece of work in 10 days, Rohan and Mohan can do in 12 days, Sohan and Mohan in 15 days. The time taken by them to do this work together is .
Correct Answer: Description for Correct answer:
(S+R)'s 1 days work = \( \Large \frac{1}{10} \)
(R+M)'s 1 days work = \( \Large \frac{1}{12} \)
(M+S)'s 1 days work = \( \Large \frac{1}{15} \)
2(S+R+M)'s 1 day work = \( \Large \frac{1}{4} \)
Therefore, (S+R+M)'s 1 days work = \( \Large \frac{1}{8} \)
Hence time taken by them to do this work together = 8 days
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