alleryA اکیلے B سے 6 دن کم لیتا ہے، اور وہ مل کر 4 دنوں میں ختم کرتے ہیں۔ B اکیلے لیتا ہے
A8 دن
B9 دن
C12 دن
D10 دن
Answer & Solution
Correct answer: C. 12 دن
A = x اور B = x + 6 کے ساتھ، 1/x + 1/(x+6) = 1/4 دیتا ہے x = 6، تو B کو 12 دن لگتے ہیں۔
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