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30 men working 8 hours per day can dig a...

30 men working 8 hours per day can dig a pond in 16 days. By working how many hours per day can 32 men dig two same ponds, in 20 days?
30 पुरुष प्रतिदिन 8 घंटे कार्य करके 16 दिनों में एक तालाब खोद सकते हैं। 32 पुरुष प्रतिदिन कितने घंटे कार्य करके 20 दिनों में दो समान तालाब खोद सकते हैं?

A

6 hours per day/ प्रतिदिन 6 घंटे

B

5 hours per day/ प्रतिदिन 5 घंटे

C

7 hours per day/ प्रतिदिन 7 घंटे

D

8 hours per day/ प्रतिदिन 8 घंटे

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