alleryP-য়ে Q-তকৈ তিনিগুণ দ্ৰুতভাৱে কাম কৰে, আৰু P-য়ে অকলে কাম কৰা Q-তকৈ 20 days সোনকালে শেষ কৰে। P-ক অকলে প্ৰয়োজন
A30 days
B20 days
C15 days
D10 days
Answer & Solution
Correct answer: D. 10 days
Q-য়ে P-ৰ সময়ৰ তিনিগুণ সময় লয়, গতিকে 3t - t = 20-এ P-ৰ বাবে t = 10 days দিয়ে।
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