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To do a certain work, the ratio of effic...

To do a certain work, the ratio of efficiencies of A and B is 3:7, working together, they can complete a work in 14 days. B started the work and after working for 8 days, he left and A completed the remaining work. For how many days did A work?
एक निश्चित कार्य करने के लिए, A और B की क्षमता का अनुपात 3: 7 है, एक साथ काम करते हुए, वे 14 दिनों में इस काम पूरा कर सकते हैं। B ने काम शुरू किया और 8 दिनों तक काम करने के बाद, उसने छोड़ दिया और A ने शेष कार्य पूरा कर लिया। A ने कितने दिनों तक काम किया?

A

28

B

30

C

24

D

27

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