(1560-X)/X*100%=25% (1350-Y)/Y*100%=-10%求解
问题描述:
(1560-X)/X*100%=25% (1350-Y)/Y*100%=-10%求解
答
(1560-X)/X*100%=25%
0.25x=1560-x
1.25x=1560
x=1248
(1350-Y)/Y*100%=-10%
-0.1y=1350-y
0.9y=1350
y=1500