alleryسیتا 30 دنوں میں نوکری کرتی ہے۔ سیتا اور تارا مل کر 20 دنوں میں کرتے ہیں۔ تارا کو اکیلے کی ضرورت ہے۔
A40 دن
B45 دن
C50 دن
D60 دن
Answer & Solution
Correct answer: D. 60 دن
تارا کی شرح 1/20 - 1/30 = 1/60 ہے، لہذا اسے 60 دنوں کی ضرورت ہے۔
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