Naveen is twice efficient as Jindal and they can do a piece of work in 15 days. Jindal started the work and after a few days Naveen joined him. They completed the work in 11 days, from the starting. For how many days they work together?

Naveen is twice efficient as Jindal and they can do a piece of work in

1.	Naveen is twice efficient as Jindal and they can do a piece of work in 15 days. Jindal started the work and after a few days Naveen joined him. They completed the work in 11 days, from the starting. For how many days they work together?
A.	6 days
B.	2 days
C.	3 days
D.	4 days
E.	None of these
Answer» B. 2 days

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Naveen is twice efficient as Jindal and they can do a piece of work in 15 days. Jindal started the work and after a few days Naveen joined him. They completed the work in 11 days, from the starting. For how many days they work together?

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