C and D together can make a chair in 4 days and C alone can make this chair in 12 days. In how many days D alone can make this chair?

C and D together can make a chair in 4 days and C alone can make this

1.	C and D together can make a chair in 4 days and C alone can make this chair in 12 days. In how many days D alone can make this chair?
A.	6 days
B.	10 days
C.	4 days
D.	8 days
Answer» B. 10 days

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C and D together can make a chair in 4 days and C alone can make this chair in 12 days. In how many days D alone can make this chair?

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