(2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890

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(2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890(2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890(200

(2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890
(2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890

(2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890
2000+3000)*0.17+(12000*0.5+10000*0.6)*0.17=2890对的答案