X(1+6%)+(12200-X)(1-5%)-12200=50怎么解
问题描述:
X(1+6%)+(12200-X)(1-5%)-12200=50怎么解
答
X(1+6%)+(12200-X)(1-5%)-12200=50
1.06X+0.95(12200-X)=50+12200
1.06X-0.95X+0.95×12200=12250
0.11X=12250-0.95×12200
0.11X=660
X=660÷0.11
X=6000