alleryবারোটি পার্সেল গড় 15 kg এবং আটটি গড় 25 kg। সামগ্রিক গড়?
A20 kg
B18 kg
C21 kg
D19 kg
Answer & Solution
Correct answer: D. 19 kg
সামগ্রিক গড় হল (12 × 15 + 8 × 25) ÷ 20 = 19 kg।
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