১০ জনকে একটি কাজ ২০ দিনে সম্পন্ন করে। ৮ জন লোকের কাজটি সম্পন্ন করতে কত দিন লাগবে?
A. ২৪
B. ৩০
C. ২৫
D. ১৬
সঠিক উত্তরঃ
C.
২৫
Explanation:
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