A এবং B একটি কাজ ৮ ঘন্টায় সম্পন্ন করতে পারে। C এবং D একই কাজ ১২ ঘন্টায় সম্পন্ন করতে পারে। যদি চারজন একই সাথে কাজ করে, তাহলে উক্ত কাজটি সম্পন্ন করতে আনুমানিক কত সময় লাগবে?
A. ৩.৬০ ঘন্টা
B. ৪.৫০ ঘন্টা
C. ৪.৮০ ঘন্টা
D. ১০.০০ ঘন্টা
সঠিক উত্তরঃ
C.
৪.৮০ ঘন্টা
Explanation:
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