alleryA এ 6 একক/h কৰে; B এ 4 একক/h বনাই 2 h পিছত আৰম্ভ কৰে। 92 ইউনিট কেতিয়া কৰা হয়, A ৰ আৰম্ভণিৰ পৰা?
A10 h
B9 h
C11 h
D12 h
Answer & Solution
Correct answer: A. 10 h
যদি A য়ে t ঘন্টা কাম কৰে তেন্তে 6t + 4(t − 2) = 92 t = 10 ঘন্টা দিয়ে।
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