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Two workers A and B working together com...

Two workers A and B working together completed a job in 5
days. If A worked twice as efficiently as he actually did and
B worked 1/3 as efficiently as he actually did, the work would
have completed in 3 days. Fine the time for A to complete
the job alone.

A

`6 1/2`

B

`6 1/4`

C

`6 3/4`

D

`12 1/2`

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The correct Answer is:
B
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