alleryএকটি পাইপ একা একটি চৌবাচ্চা 15 মিনিটে পূর্ণ করে; একটি দ্বিতীয় পাইপের সাথে এটির 6 মিনিট সময় লাগে। দ্বিতীয় পাইপটির একা সময় লাগবে
A10 মিনিট
B12 মিনিট
C8 মিনিট
D9 মিনিট
Answer & Solution
Correct answer: A. 10 মিনিট
দ্বিতীয় পাইপের হার হল 1/6 - 1/15 = 3/30 = 1/10, সুতরাং 10 মিনিট।
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