Mrs.Jones sold two houses for $80,000each.One house was sold at a 20percent loss and the other at a 20 percent gain问The gain minus the loss与0比较大小
问题描述：
Mrs.Jones sold two houses for $80,000each.One house was sold at a 20percent loss and the other at a 20 percent gain
问The gain minus the loss与0比较大小
答
Loss==80,000/4
gain==80,000/6
显然 赔了 小于0
答
小于。。。正确不？
答
X * 80% = Y * 120% =80,000
X > Y
20% X >20% Y
loss > gain
gain-loss