alleryবারোজন পুরুষ একটি কাজ 20 দিনে সম্পন্ন করতে পারতেন। 5 দিন পর, 6 জন পুরুষ চলে যান। বাকি কাজের জন্য সময় লাগে
A40 দিন
B25 দিন
C30 দিন
D20 দিন
Answer & Solution
Correct answer: C. 30 দিন
বাকি কাজ হলো 12 x 15 = 180 man-days, এবং 6 জন পুরুষের প্রয়োজন 180/6 = 30 দিন।
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