Mathematics · Time and Work
यदि 17 मजदूर प्रतिदिन 8 घंटे काम करके 18 दिनों में 26 मीटर लंबी खाई खोद सकते हैं, तो प्रतिदिन 9 घंटे काम करके 6 दिनों में वैसी ही 39 मीटर लंबी खाई खोदने के लिए कितने और मजदूरों को काम पर लगाया जाना चाहिए?
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