A企业:销项税额=45.9+(9.36+2.34)÷(1+17%)×17%=47.6(万元)进项税额=30.6+0.34=30.94(万元)应缴增值税=47.6-30.94=16.66(万元)B企业:销项税额=30.6+35.03÷(1+13%)×13%+298.35÷(1+17%)×17%=77.98(万元)进项税额=45.9+(30×13%+3×7%)×60%=48.37(万元)应缴增值税=77.98-48.37=29.61(万元)