alleryA اور B کو 10 دن، B اور C کو 15 دن، A اور C کو 12 دن لگتے ہیں۔ تینوں ایک ساتھ لیتے ہیں۔
A9 دن
B6 دن
C7.5 دن
D8 دن
Answer & Solution
Correct answer: D. 8 دن
دو مرتبہ مشترکہ شرح 1/10 + 1/15 + 1/12 = 1/4 ہے، لہذا تینوں کا مل کر 1/8 فی دن ہوتا ہے۔
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