alleryX একটি কাজ 16 দিনে সম্পন্ন করে এবং Y 48 দিনে করে। উভয়ই একসাথে কাজ করে এটি সম্পন্ন করবে
A10 দিন
B12 দিন
C14 দিন
D16 দিন
Answer & Solution
Correct answer: B. 12 দিন
প্রতিদিন কাজের 1/16 + 1/48 = 4/48 = 1/12 অংশ সম্পন্ন হয়, সুতরাং 12 দিন।
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