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x does (1)/(4) of a job in 6 days, y co...

x does `(1)/(4)` of a job in 6 days, y completes rest of the job in 12 days. Then x and y could completer the job together in :

A

`9(3)/(5)` days

B

`7(1)/(3)` days

C

9 days

D

`8(1)/(8)` days

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The correct Answer is:
A
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