作业帮A girl asks her mother how old she is.Mum:When i was your pr
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A girl asks her mother how old she is.Mum:When i was your present age,you were2.
when you are at my present age,i will be 38.
Can you find how old the mum is?
when you are at my present age,i will be 38.
Can you find how old the mum is?
孩子他妈26,孩子14.
假设孩现在他妈年龄X,孩子年龄Y.孩他妈比孩子大（X-Y）岁.则孩子在（X-Y）年前为2岁,孩他妈在（X-Y）年后为38,得出以下方程组：
Y-(X-Y)=2
X+(X-Y)=38
可以解得X=26,Y=14.
we assumption that the age of the mum is X and the girl's age is Y now.so the mum is (X-Y) years elder than the girl.we can knwo that the girl was 2 （X-Y）years befor and the mum will be 38 （X-Y）years later,so we can get following functions:
Y-(X-Y)=2
X+(X-Y)=38
the solution is:X=26,Y=14.
假设孩现在他妈年龄X,孩子年龄Y.孩他妈比孩子大（X-Y）岁.则孩子在（X-Y）年前为2岁,孩他妈在（X-Y）年后为38,得出以下方程组：
Y-(X-Y)=2
X+(X-Y)=38
可以解得X=26,Y=14.
we assumption that the age of the mum is X and the girl's age is Y now.so the mum is (X-Y) years elder than the girl.we can knwo that the girl was 2 （X-Y）years befor and the mum will be 38 （X-Y）years later,so we can get following functions:
Y-(X-Y)=2
X+(X-Y)=38
the solution is:X=26,Y=14.
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