alleryP Q-তকৈ তিনিগুণ দক্ষ, আৰু একেলগে তেওঁলোকে 15 দিনত শেষ কৰে। P-ৰ অকলে প্ৰয়োজন হ'ব
A30 দিন
B20 দিন
C15 দিন
D45 দিন
Answer & Solution
Correct answer: B. 20 দিন
3x আৰু x হাৰৰ সৈতে, 4x = 1/15 গতিকে x = 1/60, আৰু P-ৰ হাৰ 3/60 = 1/20 ৰ অৰ্থ 20 days।
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