[7000+2000+500*(1+17%)]/(1-10%)*10%=1047.48
(7000+2000+500*(1-17%))/(1-10%)*10%=1046.11
(7000+2000+500/1.17)/(1-10%)×10%=1047.48
(7000+2000)÷(1-10%)*10%=1000元
消费税组成计税价格=(7000+2000)/(1-10%)=10000受托方代收代交的消费税税额=10000*10%=1000