www.1862.net > 李大柏养鸭的只数是鹅的2倍,养鸡的只数是鸭的2倍...

李大柏养鸭的只数是鹅的2倍,养鸡的只数是鸭的2倍...

0.025X1.5X4 =0.0375X4 =0.15(万)

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