1.189.10*(1+3%)的12平方=269.8965359
2.(A) 2.7%*10=0.27 0.27-0.27*20%=0.216 10+0.216=10.216
(B) 2.25%*10=0.025 0.025-0.025*20%=0.02 10+0.02=10.02 10.02*2.25%=0.22545 0.022545-0.22545*20%=0.220941 10.02+0.220941=10.240941
B>A
1.189.10*(1+3%)的12平方=269.8965359
2.(A) 2.7%*10=0.27 0.27-0.27*20%=0.216 10+0.216=10.216
(B) 2.25%*10=0.025 0.025-0.025*20%=0.02 10+0.02=10.02 10.02*2.25%=0.22545 0.022545-0.22545*20%=0.220941 10.02+0.220941=10.240941
B>A