2.8/0.5
=5.6
5.6-5=0.6
0.6*0.5=0.3
0.3/(0.5-0.45)=6
6*0.5-2.8=0.2
0.2/(0.5-0.45)=4
6-4=2
50+4=54
50-2=48
48*0.5=24
50*0.5+4*0.45=26.8
甲家各交了26.8元电费
乙家各交了24.0元电费
2.8/0.5
=5.6
5.6-5=0.6
0.6*0.5=0.3
0.3/(0.5-0.45)=6
6*0.5-2.8=0.2
0.2/(0.5-0.45)=4
6-4=2
50+4=54
50-2=48
48*0.5=24
50*0.5+4*0.45=26.8
甲家各交了26.8元电费
乙家各交了24.0元电费