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 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?

Asked on by | Votes 38 | Views: 4393 | Tags: quantitative aptitude     | time and work     | Add Bounty

 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?

A). 10 days

B). 20 days

C). 5 days

D). 4 days


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1 answers

27 vote
Answered by on | Votes 27 |

20 days



C = 1/2 - 1/4 - 1/5 = 1/20 => 20 days

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