(1)设原电价为x元,上浮0.03为(x+0.03)元,下浮0.25元为(x-0.25)元,可得
40×(x+0.03)+60×(x-0.25)=42.2
x=0.56
(平段与谷段的电价自己计算)
(2) 100×0.56=56