If A, B and C can respectively complete ...

If A, B and C can respectively complete a piece of work in 20, 24 and 36 days respectively, how many days will they take to complete the work, if they work together?

A

`8 16/43`

B

`6 1/4`

C

`9 1/4`

D

`7 19/20`

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The correct Answer is:

A

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