১৫ জন শ্রমিক একটি কাজ ১০ দিনে সম্পন্ন করতে পারে। একই কাজ ৫০ দিনে সম্পন্ন করতে চাইলে কত জন শ্রমিক ছাঁটাই করা প্রয়োজন?


A

৪ জন


B

৭ জন


C

৯ জন


D

১২ জন


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