alleryدو دوست ایک ساتھ 8 دنوں میں ایک ہال صاف کر رہے ہیں۔ ان میں سے ایک میں صرف 24 دن لگتے ہیں۔ دوسرا اکیلا لیتا ہے۔
A12 دن
B14 دن
C10 دن
D16 دن
Answer & Solution
Correct answer: A. 12 دن
دوسرے کی شرح ہے 1/8 - 1/24 = 2/24 = 1/12، تو 12 دن۔
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