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Four men and 6 women can complete a cert...

Four men and 6 women can complete a certain piece of work in 5 days whereas three men and 4 women can complete it in 7 days. How many should assist 25 women to complete `2 1/2` times the same work in 5 days? /
4 पुरुष और 6 महिलाएं एक निश्चित काम को 5 दिनों में पूरा कर सकते हैं, जबकि तीन पुरुष और 4 महिलाएं इसे 7 दिनों में पूरा कर सकती हैं। समान कार्य के `2 1/2` गुना कार्य को 5 दिनों में पूरा करने के लिए कितनी और महिलाओं को 25 महिलाओं की सहायता करनी होगी?

A

8

B

10

C

4

D

5

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