alleryএটা পাইপে অকলে এটা টেংক 15 minutes-ত ভৰ্তি কৰে; দ্বিতীয় এটা পাইপৰ সৈতে ই 6 minutes সময় লয়। দ্বিতীয় পাইপটোৱে অকলে লয়
A10 minutes
B12 minutes
C8 minutes
D9 minutes
Answer & Solution
Correct answer: A. 10 minutes
দ্বিতীয় পাইপৰ হাৰ হ'ল 1/6 - 1/15 = 3/30 = 1/10, গতিকে 10 minutes।
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