alleryA، B اور C ایک ساتھ 4 دنوں میں ختم ہوتے ہیں۔ A اور B ایک ساتھ 6 دنوں کی ضرورت ہے۔ C اکیلے کی ضرورت ہے۔
A8 دن
B12 دن
C10 دن
D24 دن
Answer & Solution
Correct answer: B. 12 دن
C کی شرح ہے 1/4 - 1/6 = 2/24 = 1/12 فی دن، تو 12 دن۔
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