alleryA-য়ে এটা কাম 15 দিনত আৰু B-য়ে 10 দিনত কৰিব পাৰে। A-য়ে অকলে 5 দিন কাম কৰে, তাৰ পিছত B-ও যোগ দিয়ে। B-য়ে A-ৰ সৈতে কাম কৰে
A4 দিন
B6 দিন
C3 দিন
D5 দিন
Answer & Solution
Correct answer: A. 4 দিন
A-য়ে অকলে 5/15 = 1/3 কৰে; বাকী থকা 2/3 অংশ প্ৰতিদিনে 1/6 হাৰত 4 days সময় লয়।
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