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If 30 persons take 10 days to complete a...

If 30 persons take 10 days to complete a certain work working 8 hours a day. Then 40 persons should work how many hours a day so that the work is completed in 6 days?
यदि 30 लोग प्रतिदिन 8 घंटे कार्य करके किसी कार्य को 10 दिनों में पूरा करते हैं, तो इस कार्य को 6 दिनों में पूरा करने के लिए 40 व्यक्ति दिन में कितने घंटे कार्य करेंगे ?

A

6

B

10

C

8

D

12

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