alleryP Q کے مقابلے میں تین گنا زیادہ موثر ہے، اور وہ مل کر 15 دنوں میں ختم کرتے ہیں۔ P اکیلے کی ضرورت ہے۔
A30 دن
B20 دن
C15 دن
D45 دن
Answer & Solution
Correct answer: B. 20 دن
شرح 3x اور x کے ساتھ، 4x = 1/15 تو x = 1/60، اور P کی شرح 3/60 = 1/20 کا مطلب ہے 20 دن۔
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