allery12 জন শ্রমিক একটি কাজ 15 দিনে শেষ করেন। 18 জন শ্রমিকের কত দিন সময় লাগবে?
A12
B20
C10
D14
Answer & Solution
Correct answer: C. 10
শ্রমিক এবং দিন ব্যস্ত সমানুপাতিক, সুতরাং 12 x 15 = 18 x d থেকে পাওয়া যায় d = 10।
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