A.48 B.48.0/10萬-25.4/10萬=22.6/10萬 C.48.0/25.4=1.89 D.(48.0-25.4)/48.0
A.0.17% B.33.33% C.0.33% D.0.05%
A.1.25 B.1.6 C.16 D.160