alleryA-ক অকলে কিমান সময় লাগে? I: A আৰু B-ক একেলগে 6 দিন লাগে। II: B-ক অকলে 10 দিন লাগে।
Aদুয়োটা একেলগে প্ৰয়োজন
Bকেৱল II-য়েই যথেষ্ট
Cকেৱল I-য়েই যথেষ্ট
Dআনকি একেলগেও কোনোটোৱেই নহয়
Answer & Solution
Correct answer: A. দুয়োটা একেলগে প্ৰয়োজন
A-ৰ হাৰ হ'ল 1/6 বিয়োগ 1/10, যিটো হ'ল 1/15, গতিকে দুয়োটা তথ্য ব্যৱহাৰ কৰি A-ক 15 দিনৰ প্ৰয়োজন।
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