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A contractor planned to finish work in 1...

A contractor planned to finish work in 12 days and employed a certain number of men. However, 6 of them remained absent from the very first day. The rest could finish the work in 20 days. The number of men originally employed were:
एक ठेकेदार ने किसी कार्य को 12 दिनों में समाप्त करने की योजना बनाई और निश्चित संख्या में पुरुषों को काम पर लगाया | हालाँकि, इनमें से 6 पहले ही दिन से अनुपस्थिति रहे | शेष पुरुष इस कार्य को 20 दिनों में समाप्त कर सके |आरंभ में कितने पुरुषों को कार्य पर लगाया गया था ?

A

15

B

18

C

20

D

24

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