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C and D together can make a chair in 4 d...

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 और D मिलकर 4 दिन में एक कुर्सी बना सकते हैं और C अकेले इस कुर्सी को 12 दिनों में बना सकता हैं। D कितने दिनों में अकेले इस कुर्सी को बना सकता है?

A

10 days

B

6 days

C

4 days

D

8 days

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