A can do a certain Job in 12 days. B is 60% more efficient than A. To do the same Job B alone would take :
A can do a certain Job in 12 days. B is 60% more efficient than A. To do the same Job B alone would take :
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Answered by
Guest on
2018-03-05 08:34:03 | Votes
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# $7\frac{1}{2}$ days : - is correct hence option 1
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