Question

数学题 （初二的）

A cat and a dog are not satisfied with their weights. If the weight of the cat is increased by 20% while that of the dog is decreased by 10%,their weights will be the same. What percentage of dog's original weight is cat's original weight?

请求解题
可以列出详细步骤吗？

Answer 1

设猫原来的体重为X，狗原来的体重为Y。 X（1+20%）=Y（1-10%）变形得Y/X=4/3。 是不是这么做啊？

Answer 2

The answer to the question is 4：3.

Answer 3

设猫高X，狗高Y
120%X=110%Y
Y/X=12/11
狗高是毛高的12/11

Answer 4

角一=角二 所以 角一=角ANC=角8 db=ec 同位角相等嘛 角c=角d 所以一组对边平行一对角相等 是平行四边形 所以de平行ac 角a=角f