The efficiency of B is twice that of A. A can do a work in 15 days. B – McqOptions

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1.	The efficiency of B is twice that of A. A can do a work in 15 days. B joins the work a few days after A starts work. They completed that work in 11 days from the beginning. How many days did they work together?
A.	6 days
B.	1 days
C.	5 days
D.	2 days
Answer» E.

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