【1+0.3】x+【1+0.25】【960-x】=1228 过程!

问题描述:

【1+0.3】x+【1+0.25】【960-x】=1228 过程!

(1+0.3)x+5/4*960-(1+0.3-0.05)x=1228
(1+0.3)x+1200-(1+0.3)x+0.05x=1228
0.05x=28
x=560

【1+0.3】x+【1+0.25】【960-x】=1228
1.3x+1.25(960-x)=1228
1.3x+1200-1.25x=1228
0.05x=28
x=560