alleryৰবিয়ে অকলে এটা খাল 10 দিনত খান্দে আৰু সুনিলে অকলে 15 দিনত খান্দে। দুয়ো একেলগে কাম কৰিলে প্ৰয়োজন হ'ব
A8 দিন
B6 দিন
C5 দিন
D7 দিন
Answer & Solution
Correct answer: B. 6 দিন
দুয়ো একেলগে প্ৰতিদিনে খালটোৰ 1/10 + 1/15 = 5/30 = 1/6 অংশ কৰে, গতিকে 6 days।
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