2. (8 points) There are 3 boxes of apples of the same weight. If 4 kilograms are taken out from each box, the remaining weight of the apples in the boxes is exactly equal to the original weight of 1 box of apples. The original weight of each box of apples is ( ) kilograms.
A. 4
B. 6
C. 8
D. 12
【Answer】Solution: $3 \times 4 \div 2$
$$
=12 \div 2
$$
$=6$ (kg)
Answer: Each box of apples weighs 6 kg. Therefore, the correct choice is: $B$.