Question

A can do a task in 10 days and B can do the same task in 20 days. With the help of C, they is the work in 5 days. How long will it take for Calone to finish the task ?
(a) 30 days
(b) 20 days
(c) 15 days
(d) 18 days


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Answer 1

$\red{\:❥ᴀɴsᴡᴇʀ}$

18 days

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@ Aman jha