alleryA আৰু B-য়ে 10 days, B আৰু C-য়ে 15 days, A আৰু C-য়ে 12 days সময় লয়। তিনিওজনে একেলগে সময় লয়
A9 days
B6 days
C7.5 days
D8 days
Answer & Solution
Correct answer: D. 8 days
একত্ৰিত হাৰৰ দুগুণ হ'ল 1/10 + 1/15 + 1/12 = 1/4, গতিকে তিনিওজনে একেলগে প্ৰতিদিনে 1/8 অংশ কৰে।
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