alleryA 6 یونٹ فی گھنٹہ بناتا ہے۔ B 4 یونٹ فی گھنٹہ بناتا ہے اور 2 گھنٹے بعد شروع ہوتا ہے۔ A کے آغاز سے 92 یونٹس کب مکمل ہوتے ہیں؟
A10 h
B9 h
C11 h
D12 h
Answer & Solution
Correct answer: A. 10 h
اگر A t گھنٹے کام کرتا ہے، 6t + 4(t − 2) = 92 دیتا ہے t = 10 گھنٹے۔
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