দুইজন ব্যক্তি একটি কাজ একত্রে ৮ দিনে করতে পারে। প্রথম ব্যক্তি কাজটি একা ১২ দিনে করতে পারে। ২য় ব্যক্তি ঐ কাজ একা কতদিনে করতে পারবে?
A. ২০ দিন
B. ২৫ দিন
C. ২৪ দিন
D. ৩০ দিন
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সঠিক উত্তরঃ
C.
২৪ দিন
Explanation:
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