Discussion :: Time and Work
- A can do a piece of work in 4 days. B can do it in 5 days. With the assistance of C they completed the work in 2 days. Find in how many days can C alone do it?
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Answer : Option B
Explanation :
C = 1/2 - 1/4 - 1/5 = 1/20 => 20 days
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