A and B can do a piece of work in 7 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in? - Study24x7
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A and B can do a piece of work in 7 days. With the help of C they finish the work in 5 days. C alone can do that piece of work in?

A

1 day

B

10 days

C

30 days

D

32 days

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