(1+30%)X+(1+25%)*(960-x)=1228谢谢了,

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(1+30%)X+(1+25%)*(960-x)=1228谢谢了,(1+30%)X+(1+25%)*(960-x)=1228谢谢了,(1+30%)X+(1+25%)*(960-x)=1228谢谢了,原

(1+30%)X+(1+25%)*(960-x)=1228谢谢了,
(1+30%)X+(1+25%)*(960-x)=1228谢谢了,

(1+30%)X+(1+25%)*(960-x)=1228谢谢了,
原式 1.3X+960X1.25-1.25X=1228 0.05X=1228-960X1.25 即0.05X=1228-1200 0.05X=28 X= 28/0.05 X=560