A.240元B.160元C.224元D.400元
A.42500x (1+5%)/(1-20%)x20%=11156.25(元)B.[42500x (1+5%)+1x1000x2x0.5]/(1-20%)x20%+1x1000x2x0.5=12406.25(元)C.42500x (1+5%)x20%+1x1000x2x0.5=9925(元)D.[42500x(1+5%)+1x1000x2x0.5]/(1-20%)x20%=11406.25(元)
A.(85.5+2.565+179.55+7.182)÷(1-10%)x10%=30.533(萬元)B.(179.55+7.182)x10%=18.6732(萬元)C.(85.5+179.55)÷(1-10%)x10%=29.45(萬元)D.(179.55+7.182)÷(1-10%)x10%=20.748(萬元)