In addition, when the weight ratio is 2/3 and * *100 kg, the weight of big apple is 100×2/5=40, and that of small apple is 100-40=60.
Then, the equation is: 40×5/4X+60X=4.4× 100.
Solution: x = 4,5/4x = 5.
That is, the unit price of big apple is 5, and the unit price of small apple is 4.