alleryایک انلیٹ پائپ ایک ٹینک کو 6 گھنٹوں میں اور دوسرا 12 گھنٹوں میں بھرتا ہے۔ دونوں مل کر اسے بھریں۔
A9 گھنٹے
B5 گھنٹے
C4 گھنٹے
D3 گھنٹے
Answer & Solution
Correct answer: C. 4 گھنٹے
بھرنے کی شرح 1/6 + 1/12 = 3/12 = 1/4 فی گھنٹہ ٹینک کا اضافہ کرتی ہے، لہذا 4 گھنٹے۔
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