SOLUTION: A and B ca do a job together in 7 days. A is 3/14 times as efficient as B. The same job can be done by A alone in ________.
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Question 770920: A and B ca do a job together in 7 days. A is 3/14 times as efficient as B. The same job can be done by A alone in ________.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = B's rate of working in jobs / days
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Together, their rate is ( 1 job ) / ( 7 days )
and
39 and 2/3 days
---------------
check:
OK
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