alleryএগৰাকী দৰ্জিয়ে এটা বেচ 20 দিনত চিলাই কৰে, তেওঁৰ সংগীয়ে 30 দিনত কৰে। একেলগে তেওঁলোকে শেষ কৰিব
A25 দিন
B12 দিন
C10 দিন
D15 দিন
Answer & Solution
Correct answer: B. 12 দিন
তেওঁলোকৰ একত্ৰিত হাৰ হ'ল প্ৰতিদিনে 1/20 + 1/30 = 5/60 = 1/12, যাৰ ফলত 12 days হয়।
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