A and B can do a job together in 7 days. A is 13/4 times as efficient – McqOptions

MCQOPTIONS

1.	A and B can do a job together in 7 days. A is 13/4 times as efficient as B. The same job can be done by A alone in :
A.	12
B.	11 1/3
C.	11
D.	10
Answer» D. 10

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