alleryপাইপগুলি একটি চৌবাচ্চা 12 এবং 18 মিনিটে পূর্ণ করে। উভয় পাইপ 6 মিনিট ধরে চলে। পূর্ণ হওয়া ভগ্নাংশটি হল
A5/6
B1/2
C3/4
D2/3
Answer & Solution
Correct answer: A. 5/6
সম্মিলিত হার হল 1/12 + 1/18 = 5/36, এবং 6 মিনিটে পূর্ণ হয় 30/36 = 5/6।
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